I have copied the Walton Audio 300B design section to a new thread to increase participation and break the thread up a bit as it was very active.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=26654
Hope this discuusion is as fruitful as the others.
Regards
Ralf
http://www.diyaudio.com/forums/showthread.php?s=&threadid=26654
Hope this discuusion is as fruitful as the others.
Regards
Ralf
300B + Hammond 1627SE ??
I've finished my first SE project with a KT88 and I am very happy with the results, but I'm curious about the sound of a triode, so I want to try the 300B and find for myself the truth and lies about it
Since my amp is "modular" I just have to change the module of the valves keeping the PS and the OT to change to a new design (I'm preparing a connector to fast-change in between the different designs).
There are many schematics for the 300B but, do you know some specially designed for the Hammond 1627SE transformers?
I'm asking this because the schematic that I did choose for my KT88 amp was originally designed for a Tango, and I had to made few modifications to adapt it to the Hammond's.
Cheers 🙂
I've finished my first SE project with a KT88 and I am very happy with the results, but I'm curious about the sound of a triode, so I want to try the 300B and find for myself the truth and lies about it
Since my amp is "modular" I just have to change the module of the valves keeping the PS and the OT to change to a new design (I'm preparing a connector to fast-change in between the different designs).
There are many schematics for the 300B but, do you know some specially designed for the Hammond 1627SE transformers?
I'm asking this because the schematic that I did choose for my KT88 amp was originally designed for a Tango, and I had to made few modifications to adapt it to the Hammond's.
Cheers 🙂
Optimized
Hi Ping,
Just wanted to remind you that each tube requires different parts and design. So each must be optimized to make a fair comparison. It also gets expensive and very time consuming.
Can't just plug one tube into the other, adjust the idle current and then make a pronouncement like one did.
All the best Ping.
Hi Ping,
Just wanted to remind you that each tube requires different parts and design. So each must be optimized to make a fair comparison. It also gets expensive and very time consuming.
Can't just plug one tube into the other, adjust the idle current and then make a pronouncement like one did.
All the best Ping.
Re: 300B + Hammond 1627SE ??
Konnichiwa,
Not really, but in order to get some measure of consistence, you might wish to keep the circuit as similar as possible. I'll comment more below.
Not surprised. The circuit you choose uses two feedback loops (one around the output valve and one around the whole amplifier) and has a rather interesting approach to compensating the Amplifier against oscillation. In THAT PARTICULAR circuit changing such an essential part as the output transformer can make the amplifier instable.
Now I would recommend to try both the KT88 Tiode wired and the 300B WITHOUT negative feedback. Your circuit has all essentails in place.
I would suggest removing the 1K5 feedback resistor and connecting the screengrid of the KT88 to the anode via around 100 Ohm (BTW, this 100R screengrid stopper is almost always neccesary to keep such an amplifier stable and from osciallating, I'm surrised it is missing in the original schematic) and removing the capacitor on the anode.
This gives an Amplifier with the KT88 that is SE, triode and zero feedback. The 300B can drop into the position as the KT88 with only the cathode resistor and cathode capacitor adjusted (used 750R/50W & 100uF/160V, same brand and type as present on the KT88 for R&C).
Also, you will need 5V DC for the 300B heater and the quality here is absolutely critical to the sound. You MUST use schottky rectifiers and sensible types of capacitors and you MUST add a few layers of LC filtering, especially common mode filtering, for the differential mode filtering you can use a gyrator. In the 300B cathode and Heater are one and the same, so the heater supply is also part of the audio signal circuit, get it wrong and the result can be very bad.
Now it would be far from me to claim that either amplifier is optimal or ideal and I would not consider either a vehicle to judge the absolute attainable quality available from any given valve, HOWEVER, it will give you the option to judge the RELATIVE sound, compared to each other.
Sayonara
Konnichiwa,
pingfloid said:
Not really, but in order to get some measure of consistence, you might wish to keep the circuit as similar as possible. I'll comment more below.
pingfloid said:
Not surprised. The circuit you choose uses two feedback loops (one around the output valve and one around the whole amplifier) and has a rather interesting approach to compensating the Amplifier against oscillation. In THAT PARTICULAR circuit changing such an essential part as the output transformer can make the amplifier instable.
Now I would recommend to try both the KT88 Tiode wired and the 300B WITHOUT negative feedback. Your circuit has all essentails in place.
I would suggest removing the 1K5 feedback resistor and connecting the screengrid of the KT88 to the anode via around 100 Ohm (BTW, this 100R screengrid stopper is almost always neccesary to keep such an amplifier stable and from osciallating, I'm surrised it is missing in the original schematic) and removing the capacitor on the anode.
This gives an Amplifier with the KT88 that is SE, triode and zero feedback. The 300B can drop into the position as the KT88 with only the cathode resistor and cathode capacitor adjusted (used 750R/50W & 100uF/160V, same brand and type as present on the KT88 for R&C).
Also, you will need 5V DC for the 300B heater and the quality here is absolutely critical to the sound. You MUST use schottky rectifiers and sensible types of capacitors and you MUST add a few layers of LC filtering, especially common mode filtering, for the differential mode filtering you can use a gyrator. In the 300B cathode and Heater are one and the same, so the heater supply is also part of the audio signal circuit, get it wrong and the result can be very bad.
Now it would be far from me to claim that either amplifier is optimal or ideal and I would not consider either a vehicle to judge the absolute attainable quality available from any given valve, HOWEVER, it will give you the option to judge the RELATIVE sound, compared to each other.
Sayonara
Extremely relative
NO NO NO. It won't give an honest comparison as it will depend on what parts are incorporated. If the parts are non neutral sounding parts, the advantage goes to the 300b.
By the way, did you Ever tell the people the EL34/300b experiment you did that the EL34 had about twice the output impedance of the 300b, about 1/2 the damping factor of the 300b amp? Slick move there. Of course this changed the sonics throughout the audio spectrum. Remember, Joe, the engineer, criticized your little experiment, as well he should for several reasons.
With that, good bye.
NO NO NO. It won't give an honest comparison as it will depend on what parts are incorporated. If the parts are non neutral sounding parts, the advantage goes to the 300b.
By the way, did you Ever tell the people the EL34/300b experiment you did that the EL34 had about twice the output impedance of the 300b, about 1/2 the damping factor of the 300b amp? Slick move there. Of course this changed the sonics throughout the audio spectrum. Remember, Joe, the engineer, criticized your little experiment, as well he should for several reasons.
With that, good bye.
Thank you very much for your suggestions. I will start studying this new approach this weekend. First I will start this modifications for the KT88 circuit.
If I do this the KT88 will work as a triode, like at the Ranier zur Linde schematic . Am I right? I like to try that.
Ooops, I'm sorry but I'm lost here
Then I will love the 300B, since I'm not using "refined" or expensive components: orange drop caps, Tube Amp Doctor electrolytics and standard resistors. To be honest, I'm not concerned about "purity" of sound, so if the amp adds some flavour that sounds good to me I will enjoy it with no worries.
Regards,
Manuel
If I do this the KT88 will work as a triode, like at the Ranier zur Linde schematic . Am I right? I like to try that.
Ooops, I'm sorry but I'm lost here
Then I will love the 300B, since I'm not using "refined" or expensive components: orange drop caps, Tube Amp Doctor electrolytics and standard resistors. To be honest, I'm not concerned about "purity" of sound, so if the amp adds some flavour that sounds good to me I will enjoy it with no worries.
Regards,
Manuel
Re: Extremely relative
Konnichiwa,
Hmmm. Please note that I pointed to RELATIVE differences, meaning the difference of one Valve relative to another.
I must tell you, when the parts are NEUTRAL sounding the advantage goes to the 300B too. I have tried it, have you?
I am not sure what you refer to. I substituted 300B's intoi Amplifiers using EL34's (and 6550/KT-88) originally, after adjusting the Bias suitably. The results where in subjective terms and objective terms better, so hence my contention that a 300B is a better choice (in absolute terms) that a EL34 or KT88/6550.
So, if I replace an EL34 with a 300B (keeping the quiescent current equal) I get a lower output impedance, more power for the same permitted distortion and materially lower levels of distortion at low power levels (assuming the driver circuit is not the limiting factor). I know that and hence I conclude "300B is a better EL34". You have always disagreed with this, do you now agree?
Hmm. How do you know? BTW, the speaker I used at the time where actually very nicely impedance compensated, meaning that above the LF resonances (above around 150Hz) the reduced output impedance would NOT have changed the much, below this it would have slightly reduced LF output, relative to the lower midrange and up.
I have since converted several more amplifiers from Tetrode/Petode outputs to 300B's (for others) and observed similar changes in sonics, which are NOT down to the Anode impedance changes only.
I find again that you make any number of assumptions and assertations, all completely wrong. Either your research is non existent or extremely sloppy (in which case you should perhaps make sure to get your FACTS right before posting) or you simply make things up as you like (and I caught you a few times at that already).
Actually, I don't remember. I don't even who "Joe the engineer" is, a cartoo character maybe? If you remember, I am sure you can back up your claims with facts, so please provide some references to who this Joe is and how he knows what I am doing or not.
Oh yes and please stop loblocks (as they on planet anagramia) about things you have no experience with. Once you have actually substituted a 300B into your KT-88 SE Amplifier with a well implementd heater circuit (I can send you the schematic for the heater circuit neccesary to get low hum and good sound from the 300B) you can listen in direct comparison and THEN and ONLY THEN can you actually comment from a viewpoint of experience.
Of course, you will automatically put the 300B down, hence perhaps yopu should ten send the two amplifiers on to someone truely independent for a test and comments?
Until then I will go by my own ACTUAL experience and recommend to people to take your comments based on the experience YOU have with the subject (namely ZERO, ZILCH, ZIP, NADA).
Sayonara
Konnichiwa,
Positron said:
Hmmm. Please note that I pointed to RELATIVE differences, meaning the difference of one Valve relative to another.
Positron said:
I must tell you, when the parts are NEUTRAL sounding the advantage goes to the 300B too. I have tried it, have you?
Positron said:
I am not sure what you refer to. I substituted 300B's intoi Amplifiers using EL34's (and 6550/KT-88) originally, after adjusting the Bias suitably. The results where in subjective terms and objective terms better, so hence my contention that a 300B is a better choice (in absolute terms) that a EL34 or KT88/6550.
So, if I replace an EL34 with a 300B (keeping the quiescent current equal) I get a lower output impedance, more power for the same permitted distortion and materially lower levels of distortion at low power levels (assuming the driver circuit is not the limiting factor). I know that and hence I conclude "300B is a better EL34". You have always disagreed with this, do you now agree?
Positron said:
Hmm. How do you know? BTW, the speaker I used at the time where actually very nicely impedance compensated, meaning that above the LF resonances (above around 150Hz) the reduced output impedance would NOT have changed the much, below this it would have slightly reduced LF output, relative to the lower midrange and up.
I have since converted several more amplifiers from Tetrode/Petode outputs to 300B's (for others) and observed similar changes in sonics, which are NOT down to the Anode impedance changes only.
I find again that you make any number of assumptions and assertations, all completely wrong. Either your research is non existent or extremely sloppy (in which case you should perhaps make sure to get your FACTS right before posting) or you simply make things up as you like (and I caught you a few times at that already).
Positron said:
Actually, I don't remember. I don't even who "Joe the engineer" is, a cartoo character maybe? If you remember, I am sure you can back up your claims with facts, so please provide some references to who this Joe is and how he knows what I am doing or not.
Oh yes and please stop loblocks (as they on planet anagramia) about things you have no experience with. Once you have actually substituted a 300B into your KT-88 SE Amplifier with a well implementd heater circuit (I can send you the schematic for the heater circuit neccesary to get low hum and good sound from the 300B) you can listen in direct comparison and THEN and ONLY THEN can you actually comment from a viewpoint of experience.
Of course, you will automatically put the 300B down, hence perhaps yopu should ten send the two amplifiers on to someone truely independent for a test and comments?
Until then I will go by my own ACTUAL experience and recommend to people to take your comments based on the experience YOU have with the subject (namely ZERO, ZILCH, ZIP, NADA).
Sayonara
Konnichiwa,
The RZL Schematic shows the option of triode and pentode operation option. However, it retains negative feedback in a "long loop", which I find less than desirable. As said, i'd just leave the feedback out completely....
In fact, the schematic I'd recommend for the driver would be closer to the one shown below, keep your powersupply as is and increase the coupling capacitor to 0.47uF and of course triode wire the KT88:
BTW, using an "orange drop" cap as coupling cap is okay, as long as you make sure it is a film/foil type. If not, I'm sure there is a Radio pares (www.rswww.com) subsidary in Spain who can supply the Arcotronics KP1.72 capacitors, which I like as comparably sonically neutral parts for coupling (eg. go to www.rswww.com and enter part number 114-626).
What is also worthwhile doing is to return the cathode of the power valve to ground through the correctly phased speaker secondary. This applies a small amount of local negative feedback and can be combined with pentode mode or ultralinear to give higher power, but usually does not sound as good as triode mode, despite the lower power of triode operation.
Okay. Well, here a short description of my "preferred implementation" for a 300B heater supply:
1) Mains Transformer 9V+9V >> 1.5A (a 30VA torroidal transformer should be okay)
2) Dual schottky rectitier diode 30A or the like for a fullwave rectifier
3) Small value series resistor (around 1R, exact value to be tuned in circuit to adjust the DC on the heaters of the 300B to 4.875V exactly, at nominal mains voltage).
4) 4,700uF/16V low impedance electrolytic capacitor (Panasonic FC/FAseries recommended)
5) 1pair of 3.3mH Air Core Chokes (speaker crossover parts) or better a specially made > 0.1H/1.5A filter choke, the total DCR of the Choke(s) should be < 1.6R
6) 4,700uF/16V low impedance electrolytic capacitor (Panasonic FC/FAseries recommended) in parallel with at least 10uF MKP or MKT
7) Common Mode choke with at least 2A rating and as much inductance as yiu can get
8) 10uF MKP or MKT capacitor directly in parallel with the heater at the 300B socket
The large value choke(s) can be replaced by a circuit commonly known as "gyrator", which is a little incorrect. It uses an NPN Power Transistor (like 2N3055) with a resistor of a few 100 Ohm from collector to base and a capacitor a few 1,000uF from the base to ground, positivce supply line into the collector and output from the emitter, like attached, adjust the resistor between collector and base to give the correct voltage under load....
Some people use 3-Pin regulators, if you like use these but make sure they are good quality LM/LT1085 minimum and you will need some really high quality capacitors (Sanyo Os-Con recommended) around the chip (input and output capacitor plus bypass on Adj pin). I still feel that the transistor filter or a real choke sound better.
Another hint, a hot 300B heater is nominally a 4.17 Ohm Resistor. Use five paralleled 22R/2W resistors as dummy load during building & testing and allow the voltage to be slightly high, finetune with real 300B's at the end.
Sayonara
pingfloid said:
The RZL Schematic shows the option of triode and pentode operation option. However, it retains negative feedback in a "long loop", which I find less than desirable. As said, i'd just leave the feedback out completely....
In fact, the schematic I'd recommend for the driver would be closer to the one shown below, keep your powersupply as is and increase the coupling capacitor to 0.47uF and of course triode wire the KT88:
An externally hosted image should be here but it was not working when we last tested it.
BTW, using an "orange drop" cap as coupling cap is okay, as long as you make sure it is a film/foil type. If not, I'm sure there is a Radio pares (www.rswww.com) subsidary in Spain who can supply the Arcotronics KP1.72 capacitors, which I like as comparably sonically neutral parts for coupling (eg. go to www.rswww.com and enter part number 114-626).
What is also worthwhile doing is to return the cathode of the power valve to ground through the correctly phased speaker secondary. This applies a small amount of local negative feedback and can be combined with pentode mode or ultralinear to give higher power, but usually does not sound as good as triode mode, despite the lower power of triode operation.
pingfloid said:Ooops, I'm sorry but I'm lost here
Okay. Well, here a short description of my "preferred implementation" for a 300B heater supply:
1) Mains Transformer 9V+9V >> 1.5A (a 30VA torroidal transformer should be okay)
2) Dual schottky rectitier diode 30A or the like for a fullwave rectifier
3) Small value series resistor (around 1R, exact value to be tuned in circuit to adjust the DC on the heaters of the 300B to 4.875V exactly, at nominal mains voltage).
4) 4,700uF/16V low impedance electrolytic capacitor (Panasonic FC/FAseries recommended)
5) 1pair of 3.3mH Air Core Chokes (speaker crossover parts) or better a specially made > 0.1H/1.5A filter choke, the total DCR of the Choke(s) should be < 1.6R
6) 4,700uF/16V low impedance electrolytic capacitor (Panasonic FC/FAseries recommended) in parallel with at least 10uF MKP or MKT
7) Common Mode choke with at least 2A rating and as much inductance as yiu can get
8) 10uF MKP or MKT capacitor directly in parallel with the heater at the 300B socket
The large value choke(s) can be replaced by a circuit commonly known as "gyrator", which is a little incorrect. It uses an NPN Power Transistor (like 2N3055) with a resistor of a few 100 Ohm from collector to base and a capacitor a few 1,000uF from the base to ground, positivce supply line into the collector and output from the emitter, like attached, adjust the resistor between collector and base to give the correct voltage under load....
Some people use 3-Pin regulators, if you like use these but make sure they are good quality LM/LT1085 minimum and you will need some really high quality capacitors (Sanyo Os-Con recommended) around the chip (input and output capacitor plus bypass on Adj pin). I still feel that the transistor filter or a real choke sound better.
Another hint, a hot 300B heater is nominally a 4.17 Ohm Resistor. Use five paralleled 22R/2W resistors as dummy load during building & testing and allow the voltage to be slightly high, finetune with real 300B's at the end.
Sayonara
Attachments
Caught yourself again.
Do you always sneak around the truth?
I see you change your stories in every post. Over at "single ended triodes" Thorsten just announced he is now an audio engineer. I think he also claims to be using neutral sounding parts too. Of course I don't see how he has tested all the parts out there in the past 3 weeks, since he didn't know what they were then.
Also remember I had to ask twice just to find out he is getting free Test trannies and distributor prices on components.
Now I find out he is getting substantial savings on 300bs with his club. What else are you hiding Thorsten. Anything from factories, manufacturers, distributors, or dealers, or gifts, or free anything?
Re: Extremely relative Post #108
<"Konnichiwa,
quote:
Originally posted by Positron
NO NO NO. It won't give an honest comparison as it will depend on what parts are incorporated.
Hmmm. Please note that I pointed to RELATIVE differences, meaning the difference of one Valve relative to another.">
Wrong. LOL. As Joe, and engineer commented on AA, as well as I, you can make no judgements using this technique. Joe destroyed you very ignorant attempt to compare tubes.
And you actually review?? For example, if one is bright and the other brighter, there is no reference, so who is to say if one is bright or the other is dark sounding.
You just keep sticking both feet in your mouth, Napolean. But there is a sucker born every minute who will believe you, right.
By the way, you tried to hide that you get big discounts on 300b tubes in his club. Didn't mention that when you were asked about getting compensation under the table.
Thorsten has also never answered if he is getting compensation from any factories, manufacturers, distributors, dealers, from anyone, or gifts, of anything to your family, or is receiving anything, period. Trying to hide are we.
<"quote:
Originally posted by Positron
If the parts are non neutral sounding parts, the advantage goes to the 300b.
I must tell you, when the parts are NEUTRAL sounding the advantage goes to the 300B too. I have tried it, have you?">
Interesting since you didn't even know which parts are neutral sounding a mear two or three weeks ago. I think we just caught you in a bold face lie Thorsten. You also didn't even know how to test for neutrality of parts or components. So how could you have a neutral sounding amp, to test with? IF it is colored sounding, you have no useful results.
<"quote:
Originally posted by Positron
By the way, did you Ever tell the people the EL34/300b experiment you did that the EL34 had about twice the output impedance of the 300b, about 1/2 the damping factor of the 300b amp?
I am not sure what you refer to. I substituted 300B's intoi Amplifiers using EL34's (and 6550/KT-88) originally, after adjusting the Bias suitably. The results where in subjective terms and objective terms better, so hence my contention that a 300B is a better choice (in absolute terms) that a EL34 or KT88/6550.">
LOL Thorsten. The worthless experiement on AA that Joe destroyed you on, some years ago. And I do the same. You have NO idea how to run a simple experiment and you compare yourself to a genius. Even down to what CD did you use?
Are you that stupid or is this just a scam? Of course there is a sucker born everyday who would actually believe you.
<So, if I replace an EL34 with a 300B (keeping the quiescent current equal) I get a lower output impedance, more power for the same permitted distortion and materially lower levels of distortion at low power levels (assuming the driver circuit is not the limiting factor). I know that and hence I conclude "300B is a better EL34". You have always disagreed with this, do you now agree?
The problem is you cannot compare using the method you did.
1) first, we are talking about how it sounds, so don't try changing the subject. You got caught in fantasy land.
<quote:
Originally posted by Positron
Of course this changed the sonics throughout the audio spectrum.
Hmm. How do you know? BTW, the speaker I used at the time where actually very nicely impedance compensated, meaning that above the LF resonances (above around 150Hz) the reduced output impedance would NOT have changed the much, below this it would have slightly reduced LF output, relative to the lower midrange and up.>
Below 150hz, that makes all the difference in the world to the sound. If you were on top of your game, you should have known this. Also, you have a perfectly constant Z above 150? Don't make us laugh, but it is probably fairly close, assuming you just told the truth, that is always questionable to me.
But you made so many mistakes in your testing. Joe also caught you. So admit it, you have little idea on how to compare parts or components.
And the quality of your other components can change the results, entirely. And this is the way you review? LOL. Very amateurish Thorsten.
<I have since converted several more amplifiers from Tetrode/Petode outputs to 300B's (for others) and observed similar changes in sonics, which are NOT down to the Anode impedance changes only.
I find again that you make any number of assumptions and assertations, all completely wrong. Either your research is non existent or extremely sloppy (in which case you should perhaps make sure to get your FACTS right before posting) or you simply make things up as you like (and I caught you a few times at that already).>
Unfortunately, Thorsten, it is the other way around, remember. You have been caught not knowing even the basics in electronics, but trying to sneak out of it every time.
In fact you can't tell us the problems of voltage feedback in a single stage preamp you posted.
Just keep making a fool out of yourself, Thorsten.
<quote:
Originally posted by Positron
Remember, Joe, the engineer, criticized your little experiment, as well he should for several reasons.
Actually, I don't remember.>
Well, you remembered the experiment, but not Joe's butt kicking response to it, just below your post? Selective memory have we?
<I don't even who "Joe the engineer" is, a cartoo character maybe? If you remember, I am sure you can back up your claims with facts, so please provide some references to who this Joe is and how he knows what I am doing or not.>
Sticking to your denial right to the very end are we? You remember your experiment, but not the honest and accurate criticisms? Not surprising. He is a portion of the quote.
" I am sorry, but I can't belive what you wrote. Trying different tubes in the same amp (designed to handle 300b's) doesn't qualify you to make the statement you did. The design parameters are totally different; the OPT, power supply, coupling methods, filaments, layout are totally different.......As an engineer ..........In fact, you cannot make any qualified statement on anything using this procedure."
(For those who really want to seach, it is in AA, year 2000. Thorsten posted.
So Joe and I are engineers and you certainly aren't. In fact, you have no electronics training have you?
Yes, I would conclude you are either an idiot or else a scam artist. Either way, I certainly wouldn't listen to you.
<Oh yes and please stop loblocks (as they on planet anagramia) about things you have no experience with. Once you have actually substituted a 300B into your KT-88 SE Amplifier with a well implementd heater circuit (I can send you the schematic for the heater circuit neccesary to get low hum and good sound from the 300B) you can listen in direct comparison and THEN and ONLY THEN can you actually comment from a viewpoint of experience.>
Wrong again foul breath. I always notice that your designs never use neutral sounding parts. Don't you like live sounding music, or is colored your taste? You see, the neutral sounding parts, which you never use, actually change things substantially. I have much more experience than you, who seems to have to fake an experience record. You lose again Thorsten.
For instance, he has stated that he was fixing 10 components a day, and actually able to listen to them and get an idea of how they sound. Wow, putting brand new, not broken in parts, new solder connections, and you are able to judge the sound in an amp or preamp? Sounds to me like a fairy tale Thorsten. Is this how you review components? That is right, the setting is different than home or studio, but you can tell the differences?
<Of course, you will automatically put the 300B down, hence perhaps yopu should ten send the two amplifiers on to someone truely independent for a test and comments?>
You posted the weird EL34/300b experiment at AA for all of us to see, (and not independently tested Thorsten, hypocrit). Kinda shows who is the biased one, right.
So why didn't you send your experiment (mentioned on AA) off to someone else, hypocrit???
Besides the free Test transformers and speical component pricing from distributors etc. I now find you were hiding the special prices on 300bs?
So are you receiving other compensation we don't know about? Tell the whole truth, Thorsten, about your secret dealings !!!!!!
Notice he tested using an amp already/specifically designed for the 300b, so his conclusions would come out as he wanted them too. In otherwards, a set up for the conclusion he wanted.
<Until then I will go by my own ACTUAL experience and recommend to people to take your comments based on the experience YOU have with the subject (namely ZERO, ZILCH, ZIP, NADA).>
So YOU don't need verification by another? Hypocrit.
Last sentence is a lie Thorsten. I have 44 years of experience with tubes, and you have virtually none, Thorsten, according to your own biography. Since I mentioned the bio, you have been changing your story in almost every post.
I don't think I need to post anymore.
Do you always sneak around the truth?
I see you change your stories in every post. Over at "single ended triodes" Thorsten just announced he is now an audio engineer. I think he also claims to be using neutral sounding parts too. Of course I don't see how he has tested all the parts out there in the past 3 weeks, since he didn't know what they were then.
Also remember I had to ask twice just to find out he is getting free Test trannies and distributor prices on components.
Now I find out he is getting substantial savings on 300bs with his club. What else are you hiding Thorsten. Anything from factories, manufacturers, distributors, or dealers, or gifts, or free anything?
Re: Extremely relative Post #108
<"Konnichiwa,
quote:
Originally posted by Positron
NO NO NO. It won't give an honest comparison as it will depend on what parts are incorporated.
Hmmm. Please note that I pointed to RELATIVE differences, meaning the difference of one Valve relative to another.">
Wrong. LOL. As Joe, and engineer commented on AA, as well as I, you can make no judgements using this technique. Joe destroyed you very ignorant attempt to compare tubes.
And you actually review?? For example, if one is bright and the other brighter, there is no reference, so who is to say if one is bright or the other is dark sounding.
You just keep sticking both feet in your mouth, Napolean. But there is a sucker born every minute who will believe you, right.
By the way, you tried to hide that you get big discounts on 300b tubes in his club. Didn't mention that when you were asked about getting compensation under the table.
Thorsten has also never answered if he is getting compensation from any factories, manufacturers, distributors, dealers, from anyone, or gifts, of anything to your family, or is receiving anything, period. Trying to hide are we.
<"quote:
Originally posted by Positron
If the parts are non neutral sounding parts, the advantage goes to the 300b.
I must tell you, when the parts are NEUTRAL sounding the advantage goes to the 300B too. I have tried it, have you?">
Interesting since you didn't even know which parts are neutral sounding a mear two or three weeks ago. I think we just caught you in a bold face lie Thorsten. You also didn't even know how to test for neutrality of parts or components. So how could you have a neutral sounding amp, to test with? IF it is colored sounding, you have no useful results.
<"quote:
Originally posted by Positron
By the way, did you Ever tell the people the EL34/300b experiment you did that the EL34 had about twice the output impedance of the 300b, about 1/2 the damping factor of the 300b amp?
I am not sure what you refer to. I substituted 300B's intoi Amplifiers using EL34's (and 6550/KT-88) originally, after adjusting the Bias suitably. The results where in subjective terms and objective terms better, so hence my contention that a 300B is a better choice (in absolute terms) that a EL34 or KT88/6550.">
LOL Thorsten. The worthless experiement on AA that Joe destroyed you on, some years ago. And I do the same. You have NO idea how to run a simple experiment and you compare yourself to a genius. Even down to what CD did you use?
Are you that stupid or is this just a scam? Of course there is a sucker born everyday who would actually believe you.
<So, if I replace an EL34 with a 300B (keeping the quiescent current equal) I get a lower output impedance, more power for the same permitted distortion and materially lower levels of distortion at low power levels (assuming the driver circuit is not the limiting factor). I know that and hence I conclude "300B is a better EL34". You have always disagreed with this, do you now agree?
The problem is you cannot compare using the method you did.
1) first, we are talking about how it sounds, so don't try changing the subject. You got caught in fantasy land.
<quote:
Originally posted by Positron
Of course this changed the sonics throughout the audio spectrum.
Hmm. How do you know? BTW, the speaker I used at the time where actually very nicely impedance compensated, meaning that above the LF resonances (above around 150Hz) the reduced output impedance would NOT have changed the much, below this it would have slightly reduced LF output, relative to the lower midrange and up.>
Below 150hz, that makes all the difference in the world to the sound. If you were on top of your game, you should have known this. Also, you have a perfectly constant Z above 150? Don't make us laugh, but it is probably fairly close, assuming you just told the truth, that is always questionable to me.
But you made so many mistakes in your testing. Joe also caught you. So admit it, you have little idea on how to compare parts or components.
And the quality of your other components can change the results, entirely. And this is the way you review? LOL. Very amateurish Thorsten.
<I have since converted several more amplifiers from Tetrode/Petode outputs to 300B's (for others) and observed similar changes in sonics, which are NOT down to the Anode impedance changes only.
I find again that you make any number of assumptions and assertations, all completely wrong. Either your research is non existent or extremely sloppy (in which case you should perhaps make sure to get your FACTS right before posting) or you simply make things up as you like (and I caught you a few times at that already).>
Unfortunately, Thorsten, it is the other way around, remember. You have been caught not knowing even the basics in electronics, but trying to sneak out of it every time.
In fact you can't tell us the problems of voltage feedback in a single stage preamp you posted.
Just keep making a fool out of yourself, Thorsten.
<quote:
Originally posted by Positron
Remember, Joe, the engineer, criticized your little experiment, as well he should for several reasons.
Actually, I don't remember.>
Well, you remembered the experiment, but not Joe's butt kicking response to it, just below your post? Selective memory have we?
<I don't even who "Joe the engineer" is, a cartoo character maybe? If you remember, I am sure you can back up your claims with facts, so please provide some references to who this Joe is and how he knows what I am doing or not.>
Sticking to your denial right to the very end are we? You remember your experiment, but not the honest and accurate criticisms? Not surprising. He is a portion of the quote.
" I am sorry, but I can't belive what you wrote. Trying different tubes in the same amp (designed to handle 300b's) doesn't qualify you to make the statement you did. The design parameters are totally different; the OPT, power supply, coupling methods, filaments, layout are totally different.......As an engineer ..........In fact, you cannot make any qualified statement on anything using this procedure."
(For those who really want to seach, it is in AA, year 2000. Thorsten posted.
So Joe and I are engineers and you certainly aren't. In fact, you have no electronics training have you?
Yes, I would conclude you are either an idiot or else a scam artist. Either way, I certainly wouldn't listen to you.
<Oh yes and please stop loblocks (as they on planet anagramia) about things you have no experience with. Once you have actually substituted a 300B into your KT-88 SE Amplifier with a well implementd heater circuit (I can send you the schematic for the heater circuit neccesary to get low hum and good sound from the 300B) you can listen in direct comparison and THEN and ONLY THEN can you actually comment from a viewpoint of experience.>
Wrong again foul breath. I always notice that your designs never use neutral sounding parts. Don't you like live sounding music, or is colored your taste? You see, the neutral sounding parts, which you never use, actually change things substantially. I have much more experience than you, who seems to have to fake an experience record. You lose again Thorsten.
For instance, he has stated that he was fixing 10 components a day, and actually able to listen to them and get an idea of how they sound. Wow, putting brand new, not broken in parts, new solder connections, and you are able to judge the sound in an amp or preamp? Sounds to me like a fairy tale Thorsten. Is this how you review components? That is right, the setting is different than home or studio, but you can tell the differences?
<Of course, you will automatically put the 300B down, hence perhaps yopu should ten send the two amplifiers on to someone truely independent for a test and comments?>
You posted the weird EL34/300b experiment at AA for all of us to see, (and not independently tested Thorsten, hypocrit). Kinda shows who is the biased one, right.
So why didn't you send your experiment (mentioned on AA) off to someone else, hypocrit???
Besides the free Test transformers and speical component pricing from distributors etc. I now find you were hiding the special prices on 300bs?
So are you receiving other compensation we don't know about? Tell the whole truth, Thorsten, about your secret dealings !!!!!!
Notice he tested using an amp already/specifically designed for the 300b, so his conclusions would come out as he wanted them too. In otherwards, a set up for the conclusion he wanted.
<Until then I will go by my own ACTUAL experience and recommend to people to take your comments based on the experience YOU have with the subject (namely ZERO, ZILCH, ZIP, NADA).>
So YOU don't need verification by another? Hypocrit.
Last sentence is a lie Thorsten. I have 44 years of experience with tubes, and you have virtually none, Thorsten, according to your own biography. Since I mentioned the bio, you have been changing your story in almost every post.
I don't think I need to post anymore.
Re: Caught yourself again.
Konnichiwa,
I'll keep it some specific points. The rest is the usual verbiage with no proof.
Where I? If you actually read what I write (like for example my comparative reviews of 300B's) you would have found the same sources listed and the same prices our club pays. However, with bank charges and shipping being much the same for one pair of tubes and 10 pairs it is easy to see that buying as a group is sensible.
Non of this was hidden, on the contrary, it was published in a widely read on line publications. If that is hidden that clearly it was in too plainly a sight for you to see....
As for "free" test transformers, in some cases I get given "stuff" to test and it is not asked back, other times it is asked back (or asked for payment) and is then send back or paid for, depending on my desire to keep it. What I did I point out in an earlier thread was that I get "special design" transformers made without paying for the DESIGN part of it, most of the results have later become available to the general public and have been selling well without a big fat cheque going my way every week....
Secret dealings? Like those that I regulary post about publically or include in articles/reviews?
I changed my status on AA due to a recent change (very recent) which sees me now officially offering commercial modification services for certain equipment in co-operation with the importerfor this equipment and also commercialising some of my speaker designs. I have been convinced of going down this route in early April ONLY, nothing previously was done past work for friends and their friends.
Notice Positron here posts a BLATANT LIE as fact and HE KNOWS IT TO BE A LIE, as the Amplifier I originally tested in was the Edison 60 Amplifier (Kit) which anyone who cares can look up to find it ships with EL34 outputs and can be also used with KT88/6550 with minimal changes (and easily converted to 300B's).
So, KNOWING he makes a deliberatly false statement to cast doubts on my personal integrity he concludes:
I think it rather proves that positron makes up "facts" as he seems to like them, with no particular reference or recourse to reality.
Well, I think this statment very aptly describes Positrons behaviour.
I find it interesting that despite being challenged by me repeatedly to comment on his experiences with the 300B (other than noting "I listened to a few Amp's at that show, they where all garbage (I paraphrase here)") nothing is forthcomming. We are regaled by his tales of 44 Years experience (which seems to be rather lacking in depth), but nothing factual. When challenged on technical points or challenged to back up his accusations and claims, nothing is forthcoming but more verbiage with no content.
I think this more than anything else illustrates the character, especially when taken together with the charateristic lack of any constructive comments to those who ask for help to make teir own enquiries. Anyway, I leave it here, I actually have something to do instead of using discussion boards intended to share DIY experience to promote myself or my business, i prefer to share to increase the overall body of knowledge available to audio experiementers.
Sayonara
PS, just as an addition, the business I am involved with now does NOT offer any 300B equipped Amplifiers and will most likely NOT offer even a modification to 300B Output Valves, yet I will continue to note the 300B as the superior solution over the EL34/KT88/6550 range of valve, even though I make nothing from selling any in any way - why, because it happens to be the truth the way I see it, based on a lot of experience with all the above.
Konnichiwa,
I'll keep it some specific points. The rest is the usual verbiage with no proof.
Positron said:
Where I? If you actually read what I write (like for example my comparative reviews of 300B's) you would have found the same sources listed and the same prices our club pays. However, with bank charges and shipping being much the same for one pair of tubes and 10 pairs it is easy to see that buying as a group is sensible.
Non of this was hidden, on the contrary, it was published in a widely read on line publications. If that is hidden that clearly it was in too plainly a sight for you to see....
As for "free" test transformers, in some cases I get given "stuff" to test and it is not asked back, other times it is asked back (or asked for payment) and is then send back or paid for, depending on my desire to keep it. What I did I point out in an earlier thread was that I get "special design" transformers made without paying for the DESIGN part of it, most of the results have later become available to the general public and have been selling well without a big fat cheque going my way every week....
Positron said:
Secret dealings? Like those that I regulary post about publically or include in articles/reviews?
I changed my status on AA due to a recent change (very recent) which sees me now officially offering commercial modification services for certain equipment in co-operation with the importerfor this equipment and also commercialising some of my speaker designs. I have been convinced of going down this route in early April ONLY, nothing previously was done past work for friends and their friends.
Positron said:
Notice Positron here posts a BLATANT LIE as fact and HE KNOWS IT TO BE A LIE, as the Amplifier I originally tested in was the Edison 60 Amplifier (Kit) which anyone who cares can look up to find it ships with EL34 outputs and can be also used with KT88/6550 with minimal changes (and easily converted to 300B's).
So, KNOWING he makes a deliberatly false statement to cast doubts on my personal integrity he concludes:
Positron said:
I think it rather proves that positron makes up "facts" as he seems to like them, with no particular reference or recourse to reality.
Positron said:
Well, I think this statment very aptly describes Positrons behaviour.
I find it interesting that despite being challenged by me repeatedly to comment on his experiences with the 300B (other than noting "I listened to a few Amp's at that show, they where all garbage (I paraphrase here)") nothing is forthcomming. We are regaled by his tales of 44 Years experience (which seems to be rather lacking in depth), but nothing factual. When challenged on technical points or challenged to back up his accusations and claims, nothing is forthcoming but more verbiage with no content.
I think this more than anything else illustrates the character, especially when taken together with the charateristic lack of any constructive comments to those who ask for help to make teir own enquiries. Anyway, I leave it here, I actually have something to do instead of using discussion boards intended to share DIY experience to promote myself or my business, i prefer to share to increase the overall body of knowledge available to audio experiementers.
Sayonara
PS, just as an addition, the business I am involved with now does NOT offer any 300B equipped Amplifiers and will most likely NOT offer even a modification to 300B Output Valves, yet I will continue to note the 300B as the superior solution over the EL34/KT88/6550 range of valve, even though I make nothing from selling any in any way - why, because it happens to be the truth the way I see it, based on a lot of experience with all the above.
Yes, I want to try something different of the SRPP from Hiraga's design, so I will do the driver you show, but with ECC81 instead of the12A7.
Thank you very much for all your suggestions, you will keep me very busy this weekend 🙂
Manuel
More "tales from the crypt", by Thorsten.
Thorsten is so easy to answer as you seem to change stories with every post.
So now we know you get 300bs at substantial savings. However, I asked twice and you didn't mention it. At Single ended triodes chat site, you haven't mentioned the transformers or discounted component prices either. And now we learn you are getting things for free. Why have you tried to hide it?
So are you using your reviewer status to push product and get kickbacks? (read on down) I am manufacturer and I have to post I am that. How does a reviewer get out of posting he gets stuff under the table?
By the way, you keep mentioning how short on cash you are, yet get 20-30 albums a month and all those parts to test, and you are married. So how are you getting all those parts with limited income.
By the way, Tom, at Single ended triodes also questioned you as to why you are pushing 300bs so hard. Now we have an idea.
And you are ethical? Are you kidding.
Well, let's see. You called me an outright liar and I know it, but if you check Thorsten's post, he NO where mentions Edison 60 amp. He does mention this however:
"A driver circuit geared to driving PSE 300b's (in my case 6cg7; RC coupled to 5687; RC coupled to 300b or EL34."
Whatever amp he was using, the driving circuit is geared to driving 300bs. Yet he says the original tubes were EL34s. So did you modify the amp?
Now he comes back and calls me a liar and I know it? What a joke Thorsten. You lose.
Next:
"That said, the design of the amplifier has as much to do with the sound as the Valves used." So you admit you can't make a meaningful comparison as the amp makes so much difference.
Way to go Thorsten.
Unfortunately, he also skews the facts with this comment:
"If we observe the characteristics data of an EL34 in triode mode and a 300b, the anode Zs are quite close....."
the ratio is nearly two to one, Thorsten. So if the damping factor with the 300b is 4, the damping factor with the eL34 is around 2.2. So who is playing games?? Why didn't you tell the viewers the truth about the differences in plate resistance??
And the parts selection is quite critical. What may be bright, or harsh on one may be just right with the other. So your test is totally worthless. Joe pointed this out too. Your test is a joke.
Next:
I see in the last 3 weeks, you have now tested parts for neutrality? Wow that was quick. But you haven't actually tested any parts or components to a straightwire have you.
At Single Ended triodes, Thorsten cause similar problems and Tom, the owner had to get on his case. Boy did Thorsten squirm, backing out of statement after statement.
First Thorsten degraded Tom's amp as one he wouldn't even bother to audition, am I close?
Second, he degraded active preamps as highly colored (though Thorsten uses one himself) and offering a transformer. So why doesn't Thorsten use one?
He hasn't even heard all the preamps he slammed. He just slams.
Next he offers an amp so good that nothing touches it. But now get this, he has NOT seen it or heard it. Pretty gutzy T.
At single ended triodes, he all of a sudden claims he is an audio engineer. Am I right?
He also claims to fix 10 components a day and can tell what they sound like. Now this is with new, not broken in, parts and new/fresh solder connections.
If you want to get respect, clean up your "act". We will like you alot better.
Thorsten is so easy to answer as you seem to change stories with every post.
So now we know you get 300bs at substantial savings. However, I asked twice and you didn't mention it. At Single ended triodes chat site, you haven't mentioned the transformers or discounted component prices either. And now we learn you are getting things for free. Why have you tried to hide it?
So are you using your reviewer status to push product and get kickbacks? (read on down) I am manufacturer and I have to post I am that. How does a reviewer get out of posting he gets stuff under the table?
By the way, you keep mentioning how short on cash you are, yet get 20-30 albums a month and all those parts to test, and you are married. So how are you getting all those parts with limited income.
By the way, Tom, at Single ended triodes also questioned you as to why you are pushing 300bs so hard. Now we have an idea.
And you are ethical? Are you kidding.
Well, let's see. You called me an outright liar and I know it, but if you check Thorsten's post, he NO where mentions Edison 60 amp. He does mention this however:
"A driver circuit geared to driving PSE 300b's (in my case 6cg7; RC coupled to 5687; RC coupled to 300b or EL34."
Whatever amp he was using, the driving circuit is geared to driving 300bs. Yet he says the original tubes were EL34s. So did you modify the amp?
Now he comes back and calls me a liar and I know it? What a joke Thorsten. You lose.
Next:
"That said, the design of the amplifier has as much to do with the sound as the Valves used." So you admit you can't make a meaningful comparison as the amp makes so much difference.
Way to go Thorsten.
Unfortunately, he also skews the facts with this comment:
"If we observe the characteristics data of an EL34 in triode mode and a 300b, the anode Zs are quite close....."
the ratio is nearly two to one, Thorsten. So if the damping factor with the 300b is 4, the damping factor with the eL34 is around 2.2. So who is playing games?? Why didn't you tell the viewers the truth about the differences in plate resistance??
And the parts selection is quite critical. What may be bright, or harsh on one may be just right with the other. So your test is totally worthless. Joe pointed this out too. Your test is a joke.
Next:
I see in the last 3 weeks, you have now tested parts for neutrality? Wow that was quick. But you haven't actually tested any parts or components to a straightwire have you.
At Single Ended triodes, Thorsten cause similar problems and Tom, the owner had to get on his case. Boy did Thorsten squirm, backing out of statement after statement.
First Thorsten degraded Tom's amp as one he wouldn't even bother to audition, am I close?
Second, he degraded active preamps as highly colored (though Thorsten uses one himself) and offering a transformer. So why doesn't Thorsten use one?
He hasn't even heard all the preamps he slammed. He just slams.
Next he offers an amp so good that nothing touches it. But now get this, he has NOT seen it or heard it. Pretty gutzy T.
At single ended triodes, he all of a sudden claims he is an audio engineer. Am I right?
He also claims to fix 10 components a day and can tell what they sound like. Now this is with new, not broken in, parts and new/fresh solder connections.
If you want to get respect, clean up your "act". We will like you alot better.
Re: More "tales from the crypt", by Thorsten.
Konnichiwa,
Do I? I get Valves from generic sources, available to all who apply and at the same prices anyone can get them. In fact, I made my sources explicitly public in my 300B comparison review in ETM....
http://enjoythemusic.com/magazine/equipment/1201/300b/index.html
Mention WHAT?
I do not always mention everything that happened since the times of Moses, nor do you. Does that mean you hide things?
Many people in the industry (including manufacturers) get free Engineering samples. They are usually yours for asking nicely or with bigger companies through the official sample program. If you are not getting any you should seek the fault with yourself, not with others, just as not getting laid is your fault, not that others who do.
Hide it? If you actually look at any number of my articles on modifications, DIY and the like you usually find extensive lists of aknowledgemnents (and disclosures) noting who contributed what and if it was free or not. One example is here:
http://www.fortunecity.com/rivendell/xentar/1179/projects/legacy/Legacy.html
So I am trying to hide things by putting them into documents in the public domain, sure.
Am I? Can you please be precise where I have received "kickbacks" for "pushing" products?
By receiving it above the table, as I and most other reviewers do.
Do we? So basically your IDEA is that I am "pushing" 300B's because I buy them for personal use from suppliers open to the general public for the same price I pay and because I am selecting the suppliers offering the best price.
Let's see, I find relaible and low priced sources for Valves, buy from there and share them publically. And this makes me unethical. Sure.
YOU where refering to threads on AA that actually mention it. One assumes that if you refer to something you have actually read it.
Nope. The original circuit is the same as in the Audion (the company who makes the Edison kit) Amplifiers, from the EL34 SE Stirling upwards. It is "geared" to the 300B only insofar that it provides sufficient undistorted voltage.
Yes, from EL34's to 300B's, permanently, after trying out various valves in the Amp, including NOS Mullard and Siemens EL34 and others all the way to 300B's.
You know, I will call you a liar again. Simple facts are:
EL34 Anode Impedance with Va 250V and Ia 70mA is 910 ohm.
(see Mullard Datasheet here: http://www.mif.pg.gda.pl/homepages/frank/sheets/129/e/EL34.pdf )
300B Anode Impedance with Va 250V and Ia 70mA is 700 ohm
(see WE Datasheet here: http://westernelectric.com/300B/specs300Bgraphs.html )
This gives a ratio between the anode impedances of 1.3 and NOT as you have repeatedly claimed 2.
In ACTUAL FACT, the Ampliifer was/is Parallel Single Ended with a 2k4 nominal primary impedance output transformer. This means at the actual operating points (EL34 @ 400V/70mA & Ra ~ 1k, 300B @ 350V/75mA & Ra ~ 800R) are 6 for the 300B and 4.8 for the EL34, somewhat different but not hugely so, exactly as I claimed.
However, Your claim is false!
And seeing as you always insist how experienced and excellent an engineer I must consider your statement deliberatly false and that with maicious intent.
I believe to ANY reader of this thread this will have been clear for the longest time, but by now it is clear beyond any reasonbable doubt.
Well, this question first assumes that I did not tell the truth, except of course I DID tell it. More deliberate falsehood and blackballing from you.
Actually, I have tested parts for neutrality for ages. Just as an illustration (the easiest to find mention, not the oldest):
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
Now nearly 4 Years ago you can read (assuming you can read, something I begin to doubt) me discussing component neutrality in the context of capacitors and testing for it.
Hardly. I tested parts for neutrality back in the mid to late 80's when I worked for a company making mixing Desks for Radio & TV studios.
Funny you should mention it, in the nearly 4 years old source given above:
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
I mention doing "bypass" tests on capacitors. Now "bypass test" means TO BYPASS THE DUT WITH A WIRE. Or what you call "straightwire".
Really? I backed not out of a SINGLE statement I made.
For those interested to read the discussion Steve refers to without allowing others to see it (because it would fail to support his assertations?), amuse yourselves:
http://groups.yahoo.com/group/singleendedtriodes/
Well, if you want to qoute, please quote Steve. The exact statements made where of quite different nature than what you claim. I suggest to all who want to know the truth to read for themselves, on all the variosu allegations by Steve.
Steve, what on earth makes you believe I am interested in "respect"? (especially in respect from you - hey what does it bother a tree if a pig scratches itself against the tree?).
What I am interested in is to share knowledge and experiences freely, just as I like to see it from others. What I like to do is to contribute to an overall body of knowledge and opinion to be available to thoise looking to find answers, simply because I like to be able to find answers to my questions and believe in "do to others as you wish others to do yourself".
I am not here to win a popularity contest, especially not with manufacturers of audio equipment. So I could not care less if you like me or not.
If you find the truth hard to take (which you obviously do), that is your problem. You may wish to try professional help for your psychological problems instead of airing here and all over the net.
Sayonara
Konnichiwa,
Positron said:
Do I? I get Valves from generic sources, available to all who apply and at the same prices anyone can get them. In fact, I made my sources explicitly public in my 300B comparison review in ETM....
http://enjoythemusic.com/magazine/equipment/1201/300b/index.html
Positron said:
Mention WHAT?
Positron said:
I do not always mention everything that happened since the times of Moses, nor do you. Does that mean you hide things?
Positron said:
Many people in the industry (including manufacturers) get free Engineering samples. They are usually yours for asking nicely or with bigger companies through the official sample program. If you are not getting any you should seek the fault with yourself, not with others, just as not getting laid is your fault, not that others who do.
Positron said:
Hide it? If you actually look at any number of my articles on modifications, DIY and the like you usually find extensive lists of aknowledgemnents (and disclosures) noting who contributed what and if it was free or not. One example is here:
http://www.fortunecity.com/rivendell/xentar/1179/projects/legacy/Legacy.html
So I am trying to hide things by putting them into documents in the public domain, sure.
Positron said:
Am I? Can you please be precise where I have received "kickbacks" for "pushing" products?
Positron said:
By receiving it above the table, as I and most other reviewers do.
Positron said:
Do we? So basically your IDEA is that I am "pushing" 300B's because I buy them for personal use from suppliers open to the general public for the same price I pay and because I am selecting the suppliers offering the best price.
Positron said:
Let's see, I find relaible and low priced sources for Valves, buy from there and share them publically. And this makes me unethical. Sure.
Positron said:
YOU where refering to threads on AA that actually mention it. One assumes that if you refer to something you have actually read it.
Positron said:
Nope. The original circuit is the same as in the Audion (the company who makes the Edison kit) Amplifiers, from the EL34 SE Stirling upwards. It is "geared" to the 300B only insofar that it provides sufficient undistorted voltage.
Positron said:
Yes, from EL34's to 300B's, permanently, after trying out various valves in the Amp, including NOS Mullard and Siemens EL34 and others all the way to 300B's.
Positron said:
You know, I will call you a liar again. Simple facts are:
EL34 Anode Impedance with Va 250V and Ia 70mA is 910 ohm.
(see Mullard Datasheet here: http://www.mif.pg.gda.pl/homepages/frank/sheets/129/e/EL34.pdf )
300B Anode Impedance with Va 250V and Ia 70mA is 700 ohm
(see WE Datasheet here: http://westernelectric.com/300B/specs300Bgraphs.html )
This gives a ratio between the anode impedances of 1.3 and NOT as you have repeatedly claimed 2.
Positron said:
In ACTUAL FACT, the Ampliifer was/is Parallel Single Ended with a 2k4 nominal primary impedance output transformer. This means at the actual operating points (EL34 @ 400V/70mA & Ra ~ 1k, 300B @ 350V/75mA & Ra ~ 800R) are 6 for the 300B and 4.8 for the EL34, somewhat different but not hugely so, exactly as I claimed.
However, Your claim is false!
And seeing as you always insist how experienced and excellent an engineer I must consider your statement deliberatly false and that with maicious intent.
Positron said:
I believe to ANY reader of this thread this will have been clear for the longest time, but by now it is clear beyond any reasonbable doubt.
Positron said:
Well, this question first assumes that I did not tell the truth, except of course I DID tell it. More deliberate falsehood and blackballing from you.
Positron said:
Actually, I have tested parts for neutrality for ages. Just as an illustration (the easiest to find mention, not the oldest):
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
Now nearly 4 Years ago you can read (assuming you can read, something I begin to doubt) me discussing component neutrality in the context of capacitors and testing for it.
Positron said:
Hardly. I tested parts for neutrality back in the mid to late 80's when I worked for a company making mixing Desks for Radio & TV studios.
Positron said:
Funny you should mention it, in the nearly 4 years old source given above:
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
I mention doing "bypass" tests on capacitors. Now "bypass test" means TO BYPASS THE DUT WITH A WIRE. Or what you call "straightwire".
Positron said:
Really? I backed not out of a SINGLE statement I made.
For those interested to read the discussion Steve refers to without allowing others to see it (because it would fail to support his assertations?), amuse yourselves:
http://groups.yahoo.com/group/singleendedtriodes/
Positron said:
Well, if you want to qoute, please quote Steve. The exact statements made where of quite different nature than what you claim. I suggest to all who want to know the truth to read for themselves, on all the variosu allegations by Steve.
Positron said:
Steve, what on earth makes you believe I am interested in "respect"? (especially in respect from you - hey what does it bother a tree if a pig scratches itself against the tree?).
What I am interested in is to share knowledge and experiences freely, just as I like to see it from others. What I like to do is to contribute to an overall body of knowledge and opinion to be available to thoise looking to find answers, simply because I like to be able to find answers to my questions and believe in "do to others as you wish others to do yourself".
Positron said:
I am not here to win a popularity contest, especially not with manufacturers of audio equipment. So I could not care less if you like me or not.
If you find the truth hard to take (which you obviously do), that is your problem. You may wish to try professional help for your psychological problems instead of airing here and all over the net.
Sayonara
Hi Kuei,
I've just connected the KT88 in triode mode with no NFB and the result is ok so far. 🙂
My next step will be to try the ECC81 in common cathode. Do you know the advantage or disadvantage of the SRPP driver I am using? Morgan Jones at his book says that it seems a poor choice compared to the mu-follower, having the advantage that it's DC coupled internally, but he does not compare it with the cathode follower.
Cheers,
Manuel
I've just connected the KT88 in triode mode with no NFB and the result is ok so far. 🙂
My next step will be to try the ECC81 in common cathode. Do you know the advantage or disadvantage of the SRPP driver I am using? Morgan Jones at his book says that it seems a poor choice compared to the mu-follower, having the advantage that it's DC coupled internally, but he does not compare it with the cathode follower.
Cheers,
Manuel
Attachments
Added Link???
"Well, our HiFi Club buy's it's tubes in batch from Russia (including Svetlana) at very substantial discounts. Some of our members thought the difference worthwhile to purchase4 TJ Valves and sell the SV's...." I have a fairly large stock of SV300b's."
Usually when one purchases in batch, one gets quantity discounts breaks.
<http://enjoythemusic.com/magazine/e...300b/index.html>
Page cannot be found
<quote:
Originally posted by Positron
However, I asked twice and you didn't mention it.
Mention WHAT?>
What you are receiving for free, of course. Why did it take asking three times before you mentioned this?
<I do not always mention everything that happened since the times of Moses, nor do you. Does that mean you hide things?>
Because the free stuff, transformers, distributor prices on components create a conflict of interest problem. You can't serve two masters.
<Many people in the industry (including manufacturers) get free Engineering samples. They are usually yours for asking nicely or with bigger companies through the official sample program.>
But you are a reviewer and thus not entitled to this privilege. And what companies? Much like the Supreme Court is not allowed to take gifts as it might be construed as bribery, you cannot and remain unbiased.
<Hide it?...>
But we are talking here, at chat sites, not your publications, that people won't see.
<http://www.fortunecity.com/rivendel...acy/Legacy.html>
Got error message this time.
We are talking about chat sites, not your publications. You are duty bound, like any manufacturer, to reveal possible conflicts of interest.
<quote:
Originally posted by Positron
How does a reviewer get out of posting he gets stuff under the table?
By receiving it above the table, as I and most other reviewers do.>
Not here though, nor at single ended triodes.
<quote:
Originally posted by Positron
By the way, Tom, at Single ended triodes also questioned you as to why you are pushing 300bs so hard. Now we have an idea.
Do we? So basically your IDEA is that I am "pushing" 300B's because I buy them for personal use from suppliers open to the general public for the same price I pay and because I am selecting the suppliers offering the best price.>
But the more people you get on board, the cheaper the prices are, right?
<quote:
Originally posted by Positron
And you are ethical?
Let's see, I find relaible and low priced sources for Valves, buy from there and share them publically. And this makes me unethical. Sure.>
Squirming out are we? See above comments.
<quote:
Originally posted by Positron
Well, let's see. You called me an outright liar and I know it, but if you check Thorsten's post, he NO where mentions Edison 60 amp.
YOU where refering to threads on AA that actually mention it. One assumes that if you refer to something you have actually read it.>
Sure do, got it in print.
"A driver circuit geared to driving PSE 300b's (in my case 6cg7; RC coupled to 5687; RC coupled to 300b or EL34."
Whatever amp he was using, the driving circuit is geared to driving 300bs.>
Nope. The original circuit is the same as in the Audion (the company who makes the Edison kit) Amplifiers, from the EL34 SE Stirling upwards. It is "geared" to the 300B only insofar that it provides sufficient undistorted voltage.>
But you didn't mention you were using an Edison. We only have your word now, and your past record isn't promising.
quote:
Originally posted by Positron
Yet he says the original tubes were EL34s. So did you modify the amp?
Yes, from EL34's to 300B's, permanently, after trying out various valves in the Amp, including NOS Mullard and Siemens EL34 and others all the way to 300B's.>
Unfortunately, the test you ran is totally worthless, including any subjectism you with to use.
<quote:
Originally posted by Positron
"If we observe the characteristics data of an EL34 in triode mode and a 300b, the anode Zs are quite close....."
the ratio is nearly two to one, Thorsten.
You know, I will call you a liar again. Simple facts are:
EL34 Anode Impedance with Va 250V and Ia 70mA is 910 ohm.
(see Mullard Datasheet here: http://www.mif.pg.gda.pl/homepages/.../129/e/EL34.pdf )>
Two problems with calling me a liar. First I used a different data sheet, which shows higher Rp, (also just quick math, not involved) and secondly, using the mullard tube manual, show the rp to be approx. 869 ohms at 115ma. However, the rp always goes up with lower current, so you may or maynot be correct. But let's assume you are correct as it makes only a little difference.
Changing the damping factor by 1.3 is still very large. In fact, if one wants to change their speaker wire from 11.5 guage to 12 guage (very very little resistance change vs voice coil resistance etc), the sonic changes are very evident. And 1.3 change is much more evident. The conclusion is still the same, your test is worthless. Actually I think my quick tests, using different data was like 1.6, ok apology. The results are still the same, your test is worthless.
<In ACTUAL FACT, the Ampliifer was/is Parallel Single Ended with a 2k4 nominal primary impedance output transformer. This means at the actual operating points (EL34 @ 400V/70mA & Ra ~ 1k, 300B @ 350V/75mA & Ra ~ 800R) are 6 for the 300B and 4.8 for the EL34, somewhat different but not hugely so, exactly as I claimed.>
A big difference in damping factor. Even changing wire sizes of .5 guage size or so will cause noticable sonic differences.
Obviously, you haven't checked this out, just making up conclusions again.
<And seeing as you always insist how experienced and excellent an engineer I must consider your statement deliberatly false and that with maicious intent.>
See above.
quote:
Originally posted by Positron
Why didn't you tell the viewers the truth about the differences in plate resistance??
,Well, this question first assumes that I did not tell the truth, except of course I DID tell it. More deliberate falsehood and blackballing from you.>
Either data sheet shows a clear difference in damping factor. Even a .5 change is significant, but you either ignored this or didn't know. I see now that you just didn't want to mention this inportant information.
<quote:
Originally posted by Positron
I see in the last 3 weeks, you have now tested parts for neutrality?
Actually, I have tested parts for neutrality for ages. Just as an illustration (the easiest to find mention, not the oldest):>
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
Interesting you haven't mentioned this link, and even avoided replying on this subject for weeks if not months (see past strings), and now you do? Read further down for my further explantion.
<Now nearly 4 Years ago you can read (assuming you can read, something I begin to doubt) me discussing component neutrality in the context of capacitors and testing for it.>
Several times he now mentions his testing of parts. But has he really?
Let's take a look at this link. Thorsten's response to SimonS.
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
SimonS, 2 days earlier.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2185&highlight=&r=&session=
Adrian's response post, a day after SimonS.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2213&highlight=&session=
A Steve's post, the same day as SimonS.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2202&highlight=&session=
A response from George to SimonS.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2187&highlight=&session=
Now here is a post, any post, a day after Thorsten's post.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2250&highlight=&r=&session=
Notice the difference between Thorsten's link and all the other links, both dated before and after Thorsten's post?
<Funny you should mention it, in the nearly 4 years old source given above:
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
Again using the same link. Check out comparison links from AA before and after Thorsten's post.
<I mention doing "bypass" tests on capacitors. Now "bypass test" means TO BYPASS THE DUT WITH A WIRE. Or what you call "straightwire".>
From the suspect link above.
<quote:
Originally posted by Positron
At Single Ended triodes, Thorsten cause similar problems and Tom, the owner had to get on his case. Boy did Thorsten squirm, backing out of statement after statement.
Really? I backed not out of a SINGLE statement I made.>
http://groups.yahoo.com/group/singleendedtriodes/
Check it out for yourselves, guys.
<quote:
Originally posted by Positron
First Thorsten degraded Tom's amp as one he wouldn't even bother to audition, am I close?
Well, if you want to qoute, please quote Steve. The exact statements made where of quite different nature than what you claim. I suggest to all who want to know the truth to read for themselves, on all the variosu allegations by Steve.>
Guys, look it up and see for yourselves. He has some very interesting posts.
Steve, what on earth makes you believe I am interested in "respect"? (especially in respect from you - hey what does it bother a tree if a pig scratches itself against the tree?).
<What I am interested in is to share knowledge and experiences freely, just as I like to see it from others. What I like to do is to contribute to an overall body of knowledge and opinion to be available to thoise looking to find answers, simply because I like to be able to find answers to my questions and believe in "do to others as you wish others to do yourself".>
Unfortunately, I don't think you are helping audio, just damaging it.
"Well, our HiFi Club buy's it's tubes in batch from Russia (including Svetlana) at very substantial discounts. Some of our members thought the difference worthwhile to purchase4 TJ Valves and sell the SV's...." I have a fairly large stock of SV300b's."
Usually when one purchases in batch, one gets quantity discounts breaks.
<http://enjoythemusic.com/magazine/e...300b/index.html>
Page cannot be found
<quote:
Originally posted by Positron
However, I asked twice and you didn't mention it.
Mention WHAT?>
What you are receiving for free, of course. Why did it take asking three times before you mentioned this?
<I do not always mention everything that happened since the times of Moses, nor do you. Does that mean you hide things?>
Because the free stuff, transformers, distributor prices on components create a conflict of interest problem. You can't serve two masters.
<Many people in the industry (including manufacturers) get free Engineering samples. They are usually yours for asking nicely or with bigger companies through the official sample program.>
But you are a reviewer and thus not entitled to this privilege. And what companies? Much like the Supreme Court is not allowed to take gifts as it might be construed as bribery, you cannot and remain unbiased.
<Hide it?...>
But we are talking here, at chat sites, not your publications, that people won't see.
<http://www.fortunecity.com/rivendel...acy/Legacy.html>
Got error message this time.
We are talking about chat sites, not your publications. You are duty bound, like any manufacturer, to reveal possible conflicts of interest.
<quote:
Originally posted by Positron
How does a reviewer get out of posting he gets stuff under the table?
By receiving it above the table, as I and most other reviewers do.>
Not here though, nor at single ended triodes.
<quote:
Originally posted by Positron
By the way, Tom, at Single ended triodes also questioned you as to why you are pushing 300bs so hard. Now we have an idea.
Do we? So basically your IDEA is that I am "pushing" 300B's because I buy them for personal use from suppliers open to the general public for the same price I pay and because I am selecting the suppliers offering the best price.>
But the more people you get on board, the cheaper the prices are, right?
<quote:
Originally posted by Positron
And you are ethical?
Let's see, I find relaible and low priced sources for Valves, buy from there and share them publically. And this makes me unethical. Sure.>
Squirming out are we? See above comments.
<quote:
Originally posted by Positron
Well, let's see. You called me an outright liar and I know it, but if you check Thorsten's post, he NO where mentions Edison 60 amp.
YOU where refering to threads on AA that actually mention it. One assumes that if you refer to something you have actually read it.>
Sure do, got it in print.
"A driver circuit geared to driving PSE 300b's (in my case 6cg7; RC coupled to 5687; RC coupled to 300b or EL34."
Whatever amp he was using, the driving circuit is geared to driving 300bs.>
Nope. The original circuit is the same as in the Audion (the company who makes the Edison kit) Amplifiers, from the EL34 SE Stirling upwards. It is "geared" to the 300B only insofar that it provides sufficient undistorted voltage.>
But you didn't mention you were using an Edison. We only have your word now, and your past record isn't promising.
quote:
Originally posted by Positron
Yet he says the original tubes were EL34s. So did you modify the amp?
Yes, from EL34's to 300B's, permanently, after trying out various valves in the Amp, including NOS Mullard and Siemens EL34 and others all the way to 300B's.>
Unfortunately, the test you ran is totally worthless, including any subjectism you with to use.
<quote:
Originally posted by Positron
"If we observe the characteristics data of an EL34 in triode mode and a 300b, the anode Zs are quite close....."
the ratio is nearly two to one, Thorsten.
You know, I will call you a liar again. Simple facts are:
EL34 Anode Impedance with Va 250V and Ia 70mA is 910 ohm.
(see Mullard Datasheet here: http://www.mif.pg.gda.pl/homepages/.../129/e/EL34.pdf )>
Two problems with calling me a liar. First I used a different data sheet, which shows higher Rp, (also just quick math, not involved) and secondly, using the mullard tube manual, show the rp to be approx. 869 ohms at 115ma. However, the rp always goes up with lower current, so you may or maynot be correct. But let's assume you are correct as it makes only a little difference.
Changing the damping factor by 1.3 is still very large. In fact, if one wants to change their speaker wire from 11.5 guage to 12 guage (very very little resistance change vs voice coil resistance etc), the sonic changes are very evident. And 1.3 change is much more evident. The conclusion is still the same, your test is worthless. Actually I think my quick tests, using different data was like 1.6, ok apology. The results are still the same, your test is worthless.
<In ACTUAL FACT, the Ampliifer was/is Parallel Single Ended with a 2k4 nominal primary impedance output transformer. This means at the actual operating points (EL34 @ 400V/70mA & Ra ~ 1k, 300B @ 350V/75mA & Ra ~ 800R) are 6 for the 300B and 4.8 for the EL34, somewhat different but not hugely so, exactly as I claimed.>
A big difference in damping factor. Even changing wire sizes of .5 guage size or so will cause noticable sonic differences.
Obviously, you haven't checked this out, just making up conclusions again.
<And seeing as you always insist how experienced and excellent an engineer I must consider your statement deliberatly false and that with maicious intent.>
See above.
quote:
Originally posted by Positron
Why didn't you tell the viewers the truth about the differences in plate resistance??
,Well, this question first assumes that I did not tell the truth, except of course I DID tell it. More deliberate falsehood and blackballing from you.>
Either data sheet shows a clear difference in damping factor. Even a .5 change is significant, but you either ignored this or didn't know. I see now that you just didn't want to mention this inportant information.
<quote:
Originally posted by Positron
I see in the last 3 weeks, you have now tested parts for neutrality?
Actually, I have tested parts for neutrality for ages. Just as an illustration (the easiest to find mention, not the oldest):>
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
Interesting you haven't mentioned this link, and even avoided replying on this subject for weeks if not months (see past strings), and now you do? Read further down for my further explantion.
<Now nearly 4 Years ago you can read (assuming you can read, something I begin to doubt) me discussing component neutrality in the context of capacitors and testing for it.>
Several times he now mentions his testing of parts. But has he really?
Let's take a look at this link. Thorsten's response to SimonS.
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
SimonS, 2 days earlier.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2185&highlight=&r=&session=
Adrian's response post, a day after SimonS.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2213&highlight=&session=
A Steve's post, the same day as SimonS.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2202&highlight=&session=
A response from George to SimonS.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2187&highlight=&session=
Now here is a post, any post, a day after Thorsten's post.
http://db.audioasylum.com/cgi/m.mplforum=set&n=2250&highlight=&r=&session=
Notice the difference between Thorsten's link and all the other links, both dated before and after Thorsten's post?
<Funny you should mention it, in the nearly 4 years old source given above:
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214
Again using the same link. Check out comparison links from AA before and after Thorsten's post.
<I mention doing "bypass" tests on capacitors. Now "bypass test" means TO BYPASS THE DUT WITH A WIRE. Or what you call "straightwire".>
From the suspect link above.
<quote:
Originally posted by Positron
At Single Ended triodes, Thorsten cause similar problems and Tom, the owner had to get on his case. Boy did Thorsten squirm, backing out of statement after statement.
Really? I backed not out of a SINGLE statement I made.>
http://groups.yahoo.com/group/singleendedtriodes/
Check it out for yourselves, guys.
<quote:
Originally posted by Positron
First Thorsten degraded Tom's amp as one he wouldn't even bother to audition, am I close?
Well, if you want to qoute, please quote Steve. The exact statements made where of quite different nature than what you claim. I suggest to all who want to know the truth to read for themselves, on all the variosu allegations by Steve.>
Guys, look it up and see for yourselves. He has some very interesting posts.
Steve, what on earth makes you believe I am interested in "respect"? (especially in respect from you - hey what does it bother a tree if a pig scratches itself against the tree?).
<What I am interested in is to share knowledge and experiences freely, just as I like to see it from others. What I like to do is to contribute to an overall body of knowledge and opinion to be available to thoise looking to find answers, simply because I like to be able to find answers to my questions and believe in "do to others as you wish others to do yourself".>
Unfortunately, I don't think you are helping audio, just damaging it.
Links didn't come out right in last post
Try it again and see if links come out as copied. They didn't.
(I see the chat program doesn't copy the links as I typed them. I would therefore go to Thorsten's post, go backward to SimonS post and check out each of the links that way. It starts two days before Thorsten's post, the same day, and then one can look at other posts a day or two after. The posts before, during, and after have basically the Same "format" (except numbers which is understandable), but Thorsten's post has a different "format" than all the rest.)
Let's take a look at this link. Thorsten's response to SimonS.
<http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214>
SimonS, 2 days earlier.
http://db.audioasylum.com/cgi/m.mpl...ht=&r=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2185&highlight=&r=&session=>
Adrian's response post, a day after SimonS.
http://db.audioasylum.com/cgi/m.mpl...light=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2213&highlight=&session=>
A Steve's post, the same day as SimonS.
http://db.audioasylum.com/cgi/m.mpl...light=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2202&highlight=&session=>
A response from George to SimonS.
http://db.audioasylum.com/cgi/m.mpl...light=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2187&highlight=&session=>
Now here is a post, any post, a day after Thorsten's post.
http://db.audioasylum.com/cgi/m.mpl...ht=&r=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2250&highlight=&r=&session=>
Try it again and see if links come out as copied. They didn't.
(I see the chat program doesn't copy the links as I typed them. I would therefore go to Thorsten's post, go backward to SimonS post and check out each of the links that way. It starts two days before Thorsten's post, the same day, and then one can look at other posts a day or two after. The posts before, during, and after have basically the Same "format" (except numbers which is understandable), but Thorsten's post has a different "format" than all the rest.)
Let's take a look at this link. Thorsten's response to SimonS.
<http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214>
SimonS, 2 days earlier.
http://db.audioasylum.com/cgi/m.mpl...ht=&r=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2185&highlight=&r=&session=>
Adrian's response post, a day after SimonS.
http://db.audioasylum.com/cgi/m.mpl...light=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2213&highlight=&session=>
A Steve's post, the same day as SimonS.
http://db.audioasylum.com/cgi/m.mpl...light=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2202&highlight=&session=>
A response from George to SimonS.
http://db.audioasylum.com/cgi/m.mpl...light=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2187&highlight=&session=>
Now here is a post, any post, a day after Thorsten's post.
http://db.audioasylum.com/cgi/m.mpl...ht=&r=&session= <http://db.audioasylum.com/cgi/m.mplforum=set&n=2250&highlight=&r=&session=>
Got it working.
Left out the http:/ portion. You should see addresses that look similar to this but with the http:/ portion intact.
Let's take a look at this link. Thorsten's response to SimonS.
<http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214>
SimonS, 2 days earlier.
/db.audioasylum.com/cgi/m.mplforum=set&n=2185&highlight=&r=&session=
Adrian's response post, a day after SimonS.
/db.audioasylum.com/cgi/m.mplforum=set&n=2213&highlight=&session=
A Steve's post, the same day as SimonS.
/db.audioasylum.com/cgi/m.mplforum=set&n=2202&highlight=&session=
A response from George to SimonS.
/db.audioasylum.com/cgi/m.mplforum=set&n=2187&highlight=&session=
Now here is a post, any post, a day after Thorsten's post.
/db.audioasylum.com/cgi/m.mplforum=set&n=2250&highlight=&r=&session=
Notice the difference between Thorsten's link and all the other links, both dated before and after Thorsten's post?
Left out the http:/ portion. You should see addresses that look similar to this but with the http:/ portion intact.
Let's take a look at this link. Thorsten's response to SimonS.
<http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214>
SimonS, 2 days earlier.
/db.audioasylum.com/cgi/m.mplforum=set&n=2185&highlight=&r=&session=
Adrian's response post, a day after SimonS.
/db.audioasylum.com/cgi/m.mplforum=set&n=2213&highlight=&session=
A Steve's post, the same day as SimonS.
/db.audioasylum.com/cgi/m.mplforum=set&n=2202&highlight=&session=
A response from George to SimonS.
/db.audioasylum.com/cgi/m.mplforum=set&n=2187&highlight=&session=
Now here is a post, any post, a day after Thorsten's post.
/db.audioasylum.com/cgi/m.mplforum=set&n=2250&highlight=&r=&session=
Notice the difference between Thorsten's link and all the other links, both dated before and after Thorsten's post?
Hi,
Steve,
Not sure what you're trying to prove with those links, none work other than the first one.
However:
Pasted in from this link:
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214&highlight=&session=
Don't know the LCR range and neither do I know what the heck "fundamentally neutral" means, I do know however that those caps are a far cry from what I'd consider to be neutral.
Then again this doesn't come as a surprise as I don't think TL is looking for either a "neutral" sound neither does he seem to care much about bandwidth beyond 15-15KHz from what I can tell.
To each his own...
Cheers,😉
Steve,
Not sure what you're trying to prove with those links, none work other than the first one.
However:
Pasted in from this link:
http://db.audioasylum.com/cgi/m.mpl?forum=set&n=2214&highlight=&session=
Don't know the LCR range and neither do I know what the heck "fundamentally neutral" means, I do know however that those caps are a far cry from what I'd consider to be neutral.
Then again this doesn't come as a surprise as I don't think TL is looking for either a "neutral" sound neither does he seem to care much about bandwidth beyond 15-15KHz from what I can tell.
To each his own...
Cheers,😉
Konnichiwa,
Have you actually tried any of these? Theirconstruction and materials match the Audyn "Supreme" KP Cap's, and so does theier sound as far as I tried them. Solid core copper leadouts, symmetrical construction, Aluminum foil electrodes, try them. In my system I have a hard time telling them reliably from a bypass or getting a clear handle on what "sound" they have. That is "neutral" enough for me.
How do you know? Why don't you drop by and have a listen to my stuff?
Hmmm. Hence supertweeters with a response nearly up to 40KHz in my system and coupling transformers which are essentially flat to 100KHz and Amplifiers (and other circuits) tuned to have excellent 10KHz squarewaves. I think you have to revise your theories a little.
Sayonara
fdegrove said:
Have you actually tried any of these? Theirconstruction and materials match the Audyn "Supreme" KP Cap's, and so does theier sound as far as I tried them. Solid core copper leadouts, symmetrical construction, Aluminum foil electrodes, try them. In my system I have a hard time telling them reliably from a bypass or getting a clear handle on what "sound" they have. That is "neutral" enough for me.
fdegrove said:
How do you know? Why don't you drop by and have a listen to my stuff?
fdegrove said:
Hmmm. Hence supertweeters with a response nearly up to 40KHz in my system and coupling transformers which are essentially flat to 100KHz and Amplifiers (and other circuits) tuned to have excellent 10KHz squarewaves. I think you have to revise your theories a little.
Sayonara
- Status
- Not open for further replies.