BA-3 Amplifier illustrated build guide

1) I like ~ 0R11 to 0R12. It would be very helpful if you simply showed the total value of the first C and second C in effect in the circuit. I am guessing 164kuf per rail.
2) The same way you would any other pre-amp to amp. I feel like there is something missing here. Are you asking if you should leave out the front end boards in the Burning Amp?
 
1) Great.

2) I am so sorry. I still do not quite understand what you mean in #2. Please forgive me if I assume English is not your primary language. Answer YES / NO for below. If someone else understands completely, then please chime in.

You have a fully built BA-3 pre-amp with RCA outputs?
You are building a full BA-3 amplifier that includes both the BA-3 front-end and the complimentary output stage boards?
You want to know how to connect the BA-3 front end boards to the output stage (bias boards + output stage) for the BA-3 amplifier?
 
1) Great.

2) I am so sorry. I still do not quite understand what you mean in #2. Please forgive me if I assume English is not your primary language. Answer YES / NO for below. If someone else understands completely, then please chime in.

You have a fully build BA-3 pre-amp with RCA outputs?
You are building a full BA-3 amplifier that includes both the BA-3 front-end and the complimentary output stage boards?
You want to know how to connect the BA-3 front end boards to the output stage (bias boards + output stage) for the BA-3 amplifier?

He just split the FE from the amp, and put it in a separate box. So only the OS’es are left in the poweramp box. That leaves the question of wiring from FE to OS, as the OS does not have have an input for signal return.
 
Thank you Andy! Sorry for my English, its not my native language.
I have a ba-3 preamplifier.
I decided to build the Ba-3 burning amp without to have the pre inside tha same case
Your English is fine. I am from Europe, plus I am very used to the greedy boy language of yore: ZMEngrish. Gotcha right away. The answers others have to help you with :rofl:

But to recap so far: choose 4 1R resistors @ 3 watt to follow Papas PSU schematic, or 4 x 0R47 resistors to use what many experienced builders in this forum did.

6L6 once advised me to try driving the OS with another preamp, so I know he has a wiring scheme in his head for your exact problem.

MZM has a wiring scheme for all exisiting problems in the world, and being the master of ZMEngrish, he has the answer for you on a string as soon as he translates your question to his native tongue :rofl:
 
I'm using 0R1 for CRC, whatever I'm building

for second part, that's needing some pics
 

Attachments

  • BA PP OS.png
    BA PP OS.png
    56.9 KB · Views: 142
  • BA3FE standalone.png
    BA3FE standalone.png
    31.8 KB · Views: 144
@Oracle1 -

Maybe someone that is better with translation should help.

You should understand that having the BA-3 FE boards in a separate case does not make it a pre-amp. Are we not understanding or did you build a full BA-3 pre-amp with volume control and RCA outputs / input selection etc?

So, you do not have a BA-3 pre amp fully built with RCA outputs?
Why are you putting it in a different box?

Diagram of what you have, please? A picture is worth 1000 words.

-------

Andy, awesome as always. I thought that's what was happening, and that's what I was trying to ask in #1205.
 
You are perfect. That answers a key thing. There is no way I could try to do this in another language. As Andy said, your English is very good. I am trying to be more simple, so I can better help.

Next

Are you trying to leave out the "Front End" boards or the "BA-3" board in the amplifier? If so, why?
 
The part that is confusing us together is that a BA-3 amplifier has the output boards (and bias boards) that you show in your picture, but it ALSO uses the same board you used in your BA-3 pre-amplifier as a "Front-End".

BA-3 input stage or front end + Complimentary output stage (BA-2) => BA-3 amplifier

Are you intentionally trying to leave out the front end of the amplifier b/c you think you don't need it because it is the same as in your pre-amp? Did you want more of an F4?

Is there something we missed? We can help you with any solution, but we need to be sure of what you want.