Re: Henrik
I don't see a reason why you want more gain. If you would have to go to 5 o'clock position and not have enough volume, that would be understandable. But what's wrong with 2 o'clock versus 11 o'clock, you still are not using the full capabilities of your preamp. Unless you prefer the subjective look of the position of the pot😉.
My pot at the DAC's output is usually at 4 o'clock and it doesn't bother me at all.🙂
ralf said:
I don't see a reason why you want more gain. If you would have to go to 5 o'clock position and not have enough volume, that would be understandable. But what's wrong with 2 o'clock versus 11 o'clock, you still are not using the full capabilities of your preamp. Unless you prefer the subjective look of the position of the pot😉.
My pot at the DAC's output is usually at 4 o'clock and it doesn't bother me at all.🙂
Re: Re: Henrik
I agree with Peter. I sometimes go to a quarter past four and I wouldn't think twice about going to five o'clock...
/UrSv
PS. Maybe it helps that I am in Sweden and that when you guys have you pot at 4 mine is actually at 16
Peter Daniel said:
I agree with Peter. I sometimes go to a quarter past four and I wouldn't think twice about going to five o'clock...
/UrSv
PS. Maybe it helps that I am in Sweden and that when you guys have you pot at 4 mine is actually at 16
Re: Re: Re: Henrik
Actually I could present it in 24 hours system, because my Elma switch has exactly this many positions.😉
I also think that it's useless waste of gain to keep the pot at 11 o'clock. Too much gain may affect the sonics as well.
UrSv said:
PS. Maybe it helps that I am in Sweden and that when you guys have you pot at 4 mine is actually at 16
Actually I could present it in 24 hours system, because my Elma switch has exactly this many positions.😉
I also think that it's useless waste of gain to keep the pot at 11 o'clock. Too much gain may affect the sonics as well.
Again I agree with Peter.
On the off-topic topic then, Peter...
When it is midnight, would you have it in the 24 position or the 0 position? I know which one my neighbors prefer...
/UrSv
On the off-topic topic then, Peter...
When it is midnight, would you have it in the 24 position or the 0 position? I know which one my neighbors prefer...
/UrSv
I'm still used to more conventional pot setting, so at midnight the pot would be exactly at center position (12 position).
If it is only a question on pot. position I wouldn´t raise the gain at all, I agree with Peter and UrSv.
Ralf
Two simple questions:
Can You drive Your XSOZ to the point of clipping with Your XBOSOZ (r122/123 = 39K)?
What is the voltage of Your power transformer?
Two simple questions:
Can You drive Your XSOZ to the point of clipping with Your XBOSOZ (r122/123 = 39K)?
What is the voltage of Your power transformer?
Clipping
..yes i can bring it to clip, at 4 to 5 o`clock, max is 5 o`clock. the volume difference between 2 o`clock and 4 o`clock is not much.
it`s more a psychlogical thing to have a bit in reserve.
but you all are right - 2 o`clock is enough. i think, when my XSOZ is driven to 30 -40 watts all would be done.
today i lend me a digital camera to take a few pics of my XBOZ and XSOZ as some of early states of my diy CD player, but since i use linux in moment i need to wait until tomorrow to get the pics out of the camera to my XP-Pc in my Office, then i`ll show you....
Today i have made more listening tests and i can definitely say XBsoz with Xsoz is way better than original - wow -i`m really impressed. I never heard such good Musik.
unfortunally the XBsoz are somehow different, cause imaging is not exactly in the middle. I matched all Transistors and both pcb`s are identical - except of two caps in one pcb, they are build-in wrong. It would be curious, if that would be the reason...i`ll see...
In future i will compare with more expensive equipment, but i need to such people im my region, which have such expenive tools.
Really good work Henrik!!!
Regards,
Ralf
..yes i can bring it to clip, at 4 to 5 o`clock, max is 5 o`clock. the volume difference between 2 o`clock and 4 o`clock is not much.
it`s more a psychlogical thing to have a bit in reserve.
but you all are right - 2 o`clock is enough. i think, when my XSOZ is driven to 30 -40 watts all would be done.
today i lend me a digital camera to take a few pics of my XBOZ and XSOZ as some of early states of my diy CD player, but since i use linux in moment i need to wait until tomorrow to get the pics out of the camera to my XP-Pc in my Office, then i`ll show you....
Today i have made more listening tests and i can definitely say XBsoz with Xsoz is way better than original - wow -i`m really impressed. I never heard such good Musik.
unfortunally the XBsoz are somehow different, cause imaging is not exactly in the middle. I matched all Transistors and both pcb`s are identical - except of two caps in one pcb, they are build-in wrong. It would be curious, if that would be the reason...i`ll see...
In future i will compare with more expensive equipment, but i need to such people im my region, which have such expenive tools.
Really good work Henrik!!!
Regards,
Ralf
I have an adjustable power supply for SOZ. Going to 50 watts of power does not increase the volume very much from about 20 watts. Its pretty much a waste to build a 50 watt SOZ. All you get is lots of heat. A 10 watt SOZ is about the lowest you can go with ordinary speakers many of which are around 4 ohms. With that you will get nasty raspy sounds from your speakers as the SOZ hits its limit on hard musical peaks with the volume cranked up . Below ten watts will require those special speakers used for low watt single ended type tube amps. Or keep the volume down. It will play and sound great on most speakers but it has its limit. And does sound better on and more alive on speakers that are an easy load. I use an old conrad johnson PV9A tube peramp that has loads of gain. So I can crank it up with volume to spare.
I will try to X my SOZ one day. But, I am not sure from reading the thread what is the best cap and resistor values to use.
I will try to X my SOZ one day. But, I am not sure from reading the thread what is the best cap and resistor values to use.
Ralf
It is so nice that You can clip at 4 or 5 o´ clock, then You get all You need from Your XSOZ.
Let us se som pics!
Gnomus
I am using 15 Ohm speakers 95db sensitivity and only 8 Watt XSOZ, and that is more power than I need in my (little) listening room.
A 50 watt soz is quite a lot especially in terms of heat.
The double outpower in terms of watt just gives You the sensation of a little more, not much.
I agree.
It is so nice that You can clip at 4 or 5 o´ clock, then You get all You need from Your XSOZ.
Let us se som pics!
Gnomus
I am using 15 Ohm speakers 95db sensitivity and only 8 Watt XSOZ, and that is more power than I need in my (little) listening room.
A 50 watt soz is quite a lot especially in terms of heat.
The double outpower in terms of watt just gives You the sensation of a little more, not much.
I agree.
gnomus said:
If You do, then be shure to use some preamp capable of driveing a load of 120 Ohm singleended!
gnomus said:
Pretend this is a Nike ad. (just do it)
Get going with something crappy (or marginal).
Then rejoice at the improvement when you put in
something better.
😎
Go with something crappy... ???
To go with something crappy, last night I dusted off my 3-way 8-ohm 97-dB horn speakers. And fed them power of BOSOZ and XSOZV2. The sound came out effortless and louder. I did this trial to taste top frequency quality of the “industrial” music and movie soundtrack. My first observation was that the gain of the amps was too high for my room space. Therefore, I lowered the gain of BOSOZ from 10dB down to 6dB. And I started to taste the top frequencies. I expected crappy top, but it was not. There were somewhat edges (mainly due to low distortion, I think). The edges however were not ear-piercing, but as much as harsh flavour intended for music. Finally, I decided to keep my Ariel speakers in the storeroom. It was also according to recommendation of my two boys living together.
Yeah, it is good if something crappy turns out something good by chance or by painless effort.
JH
To go with something crappy, last night I dusted off my 3-way 8-ohm 97-dB horn speakers. And fed them power of BOSOZ and XSOZV2. The sound came out effortless and louder. I did this trial to taste top frequency quality of the “industrial” music and movie soundtrack. My first observation was that the gain of the amps was too high for my room space. Therefore, I lowered the gain of BOSOZ from 10dB down to 6dB. And I started to taste the top frequencies. I expected crappy top, but it was not. There were somewhat edges (mainly due to low distortion, I think). The edges however were not ear-piercing, but as much as harsh flavour intended for music. Finally, I decided to keep my Ariel speakers in the storeroom. It was also according to recommendation of my two boys living together.
Yeah, it is good if something crappy turns out something good by chance or by painless effort.
JH
Re: Caps
Hi all!
I was just looking for some explanation on the phenomena above described by Peter.
I found this description on the "Super E-Caps" from BlackGate on the site http://www.referenceaudiomods.com/bgecaps.html
I think that what Peter expirienced when he paralleled the two capacitors by connecting outer foil to inner foil was the same (more or less) cancellation of induction, and when he connected innerfoil to innerfoil and outer foil to outerfoil he expierienced the additive interaction of two induction sources. May be, may be not, but I think so?
But I asked my local Audionote dealer if there is some sonical polarization in BlackGate type N, and he said no from personally expierience. More important, he also told me, that if two is used in parallel, You defently have to couple "outer foil to inner foil" and this sounds better than just one.
Hi all!
Peter Daniel said:
I was just looking for some explanation on the phenomena above described by Peter.
I found this description on the "Super E-Caps" from BlackGate on the site http://www.referenceaudiomods.com/bgecaps.html
I think that what Peter expirienced when he paralleled the two capacitors by connecting outer foil to inner foil was the same (more or less) cancellation of induction, and when he connected innerfoil to innerfoil and outer foil to outerfoil he expierienced the additive interaction of two induction sources. May be, may be not, but I think so?
But I asked my local Audionote dealer if there is some sonical polarization in BlackGate type N, and he said no from personally expierience. More important, he also told me, that if two is used in parallel, You defently have to couple "outer foil to inner foil" and this sounds better than just one.
caps
that could explain the curiosity with my XBsoz.
Next days i will try and polarize two of my mkp`s other way round..
Regards,
Ralf
that could explain the curiosity with my XBsoz.
Next days i will try and polarize two of my mkp`s other way round..
Regards,
Ralf
