Hi Carlos,
nothing to worry about.
SymAsym has become a huge success over the last years here in Germany. More than 2000 PCBs have been produced and given to the people. It's getting more and more fans every day (me being the biggest 😀).
Noone wants "to smash" this amplifier, which is simply not possible - it is far too good. But nevertheless, it has a certain signature, and it would be very interesting to listen to an alternative with comparable size and effort. According to Rudi, DX Blame ES might be such an amp. It don't expect it to be "better", but "different" and perhaps more suited for some people's taste or with certain speakers.
nothing to worry about.
SymAsym has become a huge success over the last years here in Germany. More than 2000 PCBs have been produced and given to the people. It's getting more and more fans every day (me being the biggest 😀).
Noone wants "to smash" this amplifier, which is simply not possible - it is far too good. But nevertheless, it has a certain signature, and it would be very interesting to listen to an alternative with comparable size and effort. According to Rudi, DX Blame ES might be such an amp. It don't expect it to be "better", but "different" and perhaps more suited for some people's taste or with certain speakers.
It is all right....you have good intentions, but this may loose control
Open, please, a thread to do that.
regards,
Carlos
Open, please, a thread to do that.
regards,
Carlos
Carlos, dear friend,
I have been checking your today's job for some while.
I feel good.
You did not mix any capacitor's polarity, inserted the transistors in the right direction: good job, Carlos (LoL!). 😉
Concerning the onboard-PSU:
As I learned from you: it is best to have a separate transformer for each channel.
So the right channel is not dependent on the power being drawn from the left channel and vice_versa.
I call this "Dual Mono design".
I installed 2 full-wave bridge rectifiers on each PCB to be able to put them as far as possible from the input - that is why.
And this is also the reason why the prototype PCB is that big, why I abandoned the idea of implementing an onboard-PSU in this way.
@Holger: I woud very much appreciate to do this comparison.
Both - the DX Blame and the SYMASYM - are "top of the notch" amplifiers.
I simply want to find out where they differ in sonics.
Best regards - Rudi_Ratlos
I have been checking your today's job for some while.
I feel good.
You did not mix any capacitor's polarity, inserted the transistors in the right direction: good job, Carlos (LoL!). 😉
Concerning the onboard-PSU:
As I learned from you: it is best to have a separate transformer for each channel.
So the right channel is not dependent on the power being drawn from the left channel and vice_versa.
I call this "Dual Mono design".
I installed 2 full-wave bridge rectifiers on each PCB to be able to put them as far as possible from the input - that is why.
And this is also the reason why the prototype PCB is that big, why I abandoned the idea of implementing an onboard-PSU in this way.
@Holger: I woud very much appreciate to do this comparison.
Both - the DX Blame and the SYMASYM - are "top of the notch" amplifiers.
I simply want to find out where they differ in sonics.
Best regards - Rudi_Ratlos
An externally hosted image should be here but it was not working when we last tested it.
Comparison of Dx Blame with Symassym is off topic because Symassym
this is not Symassym thread.
Let's organize better our lives..here is Dx Blame.....another thread can be Symassym compared to other amplifiers.
regards,
Carlos
this is not Symassym thread.
Let's organize better our lives..here is Dx Blame.....another thread can be Symassym compared to other amplifiers.
regards,
Carlos
Fair enough, DX.
BTW We have not heard from Ekkart about stereo Blame. I am curious like anyone I guess, what the stereo "image" seems like to him and the audio group. Rudi, you have not said much about this aspect yet that I recall.
While I am still building, it is something to consider for later perhaps.
BTW We have not heard from Ekkart about stereo Blame. I am curious like anyone I guess, what the stereo "image" seems like to him and the audio group. Rudi, you have not said much about this aspect yet that I recall.
While I am still building, it is something to consider for later perhaps.
How to adjust your Blame Amplifier - videos
YouTube - Dx Blame, how to adjust.
YouTube - Blame, starting waveform inspection.
How to adjust to obtain a symetrical clipping, the amplifier fine tuning and how to control overshot will be explained, by email, to the builders only.
regards,
Carlos
YouTube - Dx Blame, how to adjust.
YouTube - Blame, starting waveform inspection.
How to adjust to obtain a symetrical clipping, the amplifier fine tuning and how to control overshot will be explained, by email, to the builders only.
regards,
Carlos
DX Blame PCB is approved
As Carlos just wrote me, he approved METAL's professionally layouted PCB of the DX Blame.
Allthough he was very busy in the last days, he took the time needed to torture the PCB with rectangular input, microphone feedback, ..., METAL's board played undeviatingly.
So: it is approved.
Here is the URL :
YouTube - Dx Blame, how to adjust.
in which Carlos shows how to adjust one channel of the DX Blame.
I will now talk to METAL on how to go on and will let you know.
Best regards - Rudi_Ratlos
As Carlos just wrote me, he approved METAL's professionally layouted PCB of the DX Blame.
Allthough he was very busy in the last days, he took the time needed to torture the PCB with rectangular input, microphone feedback, ..., METAL's board played undeviatingly.
So: it is approved.
Here is the URL :
YouTube - Dx Blame, how to adjust.
in which Carlos shows how to adjust one channel of the DX Blame.
I will now talk to METAL on how to go on and will let you know.
Best regards - Rudi_Ratlos
An externally hosted image should be here but it was not working when we last tested it.
Hey,
I'm back from hollidays on the motorcycle.....a dream on two wheels...the high Tatra....exploring with KTM 🙂)))
ok, back to the dx-blame...
dear Ian, you havn't read my posts?!?
I said the dx-blame is one of the finest amps i have heared...you can take a Luxman L-530, one of the most popular Amps ever sold, and this amp can't do it better.
There is a very nice and good stereo replication, it was testet realy with B&W 801N & D...what else you want to read???
Ceep cool, this nice sound you can't destroy with your posts
😀😀
To make it short:
Neither METAL nor I will support a "group buy" of the DX Blame PCB.
"Group buy": it is very time-consuming and we won't earn a penny.
I will talk to Volker about this topic tonight.
METAL and I made up our minds 2 months ago to design a professionally layouted version of an "Universal DX Blame" PCB
that will support the discontinued DX BlameES as well as the current DX BlameST (the "stable one", approved by CARLOS)
and even the DX Blame Class A - version.
Our intention was to create an EMEA ("Europe / Middle East") PCB - version of the DX Blame - the most beautiful amplifier
I ever listened to - and have our names being printed on the top-layer of the PCB.
Hundreds of hours of layouting / checking - work passed since then.
Finally - today - Carlos approved our edition of the DX Blame.
Of course will METAL and I now order PCBs: to hold them in our hands and build "our" (Carlos' DX Corp. EMEA Division) version of the DX Blame.
The PCBs will eventually look like this, have this quality:
The size of the PCB will be 148 x 114 mm.
The PCB will not have the PSU "on board", will be double-sided (so you do not need to solder any jumpers), will have a red soldermask
on each side and a silk-screen with components' values on the top side.
If you are interested and want to join METAL's and my order:
Please do not expect to get a PCB like this for one of the best-sounding DIY - AMPs for less than 10€ (but not much more as well).
(Sorry, Carlos, this is the only one time I am talking about a a price.)
I will order the DX Blame PCBs next Saturday (July 3rd).
Please tell me via PM if you want to be one of the happy owners of the EMEA DX Blame PCBs as well.
I will answer your request as soon as possible.
Best regards - Rudi_Ratlos
Neither METAL nor I will support a "group buy" of the DX Blame PCB.
"Group buy": it is very time-consuming and we won't earn a penny.
I will talk to Volker about this topic tonight.
METAL and I made up our minds 2 months ago to design a professionally layouted version of an "Universal DX Blame" PCB
that will support the discontinued DX BlameES as well as the current DX BlameST (the "stable one", approved by CARLOS)
and even the DX Blame Class A - version.
Our intention was to create an EMEA ("Europe / Middle East") PCB - version of the DX Blame - the most beautiful amplifier
I ever listened to - and have our names being printed on the top-layer of the PCB.
Hundreds of hours of layouting / checking - work passed since then.
Finally - today - Carlos approved our edition of the DX Blame.
Of course will METAL and I now order PCBs: to hold them in our hands and build "our" (Carlos' DX Corp. EMEA Division) version of the DX Blame.
The PCBs will eventually look like this, have this quality:
The size of the PCB will be 148 x 114 mm.
The PCB will not have the PSU "on board", will be double-sided (so you do not need to solder any jumpers), will have a red soldermask
on each side and a silk-screen with components' values on the top side.
If you are interested and want to join METAL's and my order:
Please do not expect to get a PCB like this for one of the best-sounding DIY - AMPs for less than 10€ (but not much more as well).
(Sorry, Carlos, this is the only one time I am talking about a a price.)
I will order the DX Blame PCBs next Saturday (July 3rd).
Please tell me via PM if you want to be one of the happy owners of the EMEA DX Blame PCBs as well.
I will answer your request as soon as possible.
Best regards - Rudi_Ratlos
I have already received several inquiries tonight.
Thank you.
The DX Blame is definitely worth your interest!
I have one additional question to you (the "interested party list"):
There are 2 ways to mount the power transistors to the heatsink:
1st way (as CARLOS does normally):
Mount the power transistors on an ALU - L-profile and fasten the L-profile to the heatsink (as shown on the picture below):
In this case you need the "border" as shown on the original PCB's design.
Or - 2nd way - to mount the transistors, either vertically or horizontally - directly on the heatsink like shown below:
In this case the PCB has to be cut.
Please tell me - in case you are interested - the way you like to install the PCB.
I will quote different orders according to your needs.
Best regards - Rudi_Ratlos
Thank you.
The DX Blame is definitely worth your interest!
I have one additional question to you (the "interested party list"):
There are 2 ways to mount the power transistors to the heatsink:
1st way (as CARLOS does normally):
Mount the power transistors on an ALU - L-profile and fasten the L-profile to the heatsink (as shown on the picture below):
An externally hosted image should be here but it was not working when we last tested it.
In this case you need the "border" as shown on the original PCB's design.
Or - 2nd way - to mount the transistors, either vertically or horizontally - directly on the heatsink like shown below:
An externally hosted image should be here but it was not working when we last tested it.
In this case the PCB has to be cut.
Please tell me - in case you are interested - the way you like to install the PCB.
I will quote different orders according to your needs.
Best regards - Rudi_Ratlos
An externally hosted image should be here but it was not working when we last tested it.
i just couldnt wait for an multimeter i had to plug it in to the transformer (light bulb in circuit)after fiddling got some sound but farting i thought damn u amp. i then checked for broken wire resoldered the transistor wire then i had clear sound but low. i then thought maybe i got rong resistor in the input i just trimmed off the ten ohm resistor off the near fuse n paralelled with the resistor for input sound circuit it got louder to what i call 50 watts. very clear turned the multiturn pot light bulb goes dimmer when i turn the pot i think when it goes dimmer that where the sweet spot is but the bulb stays on and brights up when bass pounds..
Hi Joka
Testing this way is avoiding the important step of setting bias current first. If you don't want a handful of blown transistors, please find a meter - even a friend who can loan you one. I have seen very cheap, like 4 UKPounds for meters that are good enough for this recently.
Really, just because you get sound doesn't mean its all set to go. Anyway, we are all happy for you and the success so far. 'Great isn't it? Take care and don't blow all your cash on parts just to fix it again.
Testing this way is avoiding the important step of setting bias current first. If you don't want a handful of blown transistors, please find a meter - even a friend who can loan you one. I have seen very cheap, like 4 UKPounds for meters that are good enough for this recently.
Really, just because you get sound doesn't mean its all set to go. Anyway, we are all happy for you and the success so far. 'Great isn't it? Take care and don't blow all your cash on parts just to fix it again.
Yes. The exitement of the first power-on usually makes one to rush, forget common sense and make mistakes that can be very expensive or even dangerous.
I think a multimeter is the most useful tool (especially the "diode tester" for shorts), sine qua non ... I would say that, for power amp builders, the next most useful tool is a variac (the tool, not the honourable Moderator 😀).
Never work when sleepy or tired...
"Good judgment comes from experience...and experience comes from bad judgement" 😀
Good luck.
M.
I think a multimeter is the most useful tool (especially the "diode tester" for shorts), sine qua non ... I would say that, for power amp builders, the next most useful tool is a variac (the tool, not the honourable Moderator 😀).
Never work when sleepy or tired...
"Good judgment comes from experience...and experience comes from bad judgement" 😀
Good luck.
M.
thanks for the advice guys just waiting for carlos to make a video on bias the amp since i dont seem to understand the instructions. plus i never found a video on biasing a amp except them tube type amps which going and on without useful info.
But i did it Joka..and was published..also was in my signature the link to two videos
It is a good idea to read the thread dear Joka.... take some time to do that...as i did that because you have asked..and now you say that is wainting me to do?
hehehehehe.
I did it man... observe in my signature...new links each two days, showing videos.
here they are.... and i have used your own language!
YouTube - Dx Blame, how to adjust.
YouTube - Blame amplifier tunning made
regards,
Carlos
It is a good idea to read the thread dear Joka.... take some time to do that...as i did that because you have asked..and now you say that is wainting me to do?
hehehehehe.
I did it man... observe in my signature...new links each two days, showing videos.
here they are.... and i have used your own language!
YouTube - Dx Blame, how to adjust.
YouTube - Blame amplifier tunning made
regards,
Carlos
Speakers
I wonder about this amplifier, and the number of people made it.
I dont know if the speakers makes diference or not with this amplifer.
Since we talk about amplifier, and we forgot the speakers, music source.
And the amplifer is compared to what exactlly?
What other models out there to compare with?
I just want to have some light on this issue
I wonder about this amplifier, and the number of people made it.
I dont know if the speakers makes diference or not with this amplifer.
Since we talk about amplifier, and we forgot the speakers, music source.
And the amplifer is compared to what exactlly?
What other models out there to compare with?
I just want to have some light on this issue
You might want to build it and use it with Yamaha NS-50F 😉 Just a suggestion AudioTechs 🙂 You will find answers to your questions, indeed.
I have received an envelope containing valuable parts from EVETTE (codename)
A forum friend, that lives in the French Canadá (Quebec i think) that has sent me parts as gift.
Thank you very much dear Evette.
The package is still in my ex wife's appartment, i use to send to her adress because there are more employees there than here..so, it is easier to the postman deliver the package.
I will see tomorrow when family comes to visit me, seems there are power transistors that have thermal sensor diodes inside... daugther said the envelope is not lighweigth as usual... and that was opened and inspected by custom's officer..... hehehehehehe.
regards,
Carlos
A forum friend, that lives in the French Canadá (Quebec i think) that has sent me parts as gift.
Thank you very much dear Evette.
The package is still in my ex wife's appartment, i use to send to her adress because there are more employees there than here..so, it is easier to the postman deliver the package.
I will see tomorrow when family comes to visit me, seems there are power transistors that have thermal sensor diodes inside... daugther said the envelope is not lighweigth as usual... and that was opened and inspected by custom's officer..... hehehehehehe.
regards,
Carlos
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