Burning Amplifier BA-3 - Page 3

17th August 2011, 04:41 PM
Nelson Pass The one and only Join Date: Mar 2001	Burning Amplifier BA-3 Introduction In the BA-1 and BA-2 projects we constructed two different amplifiers using very similar input and voltage gain stages (aka the “front ends”), but used them to drive two different Class A Mosfet follower output stages. Now we are going to flip this approach and begin... Click here to read the entire article Last edited by Jason; 14th September 2011 at 09:22 AM.

19th September 2011

ross57

diyAudio Member

Thank you Zen Mod! For some strange reason I didn't see the pics in my previous visit. I will continue on https://www.diyaudio.com/forums/pass-...-new-post.html for any other comments/questions. Tnx once again!

20th September 2011

Manu

diyAudio Member

I like the part before "You probably skipped over the previous section to get to this part."

Manu

Manu, masked agent of entropy & ZMs Čiko

21st September 2011

altium

diyAudio Member

Thank you very much!

24th September 2011

masood

diyAudio Member

dear pass,
thanking you for sending me new burning amplifier .i want to love you.plz send me the copper side of pcb for making that.if pcb is available in india plz send the adress.
thanks alots

5th October 2011

Andrej Maximov

diyAudio Member

Q3, Q4 - ? Was ist das?

8th October 2011

Nelson Pass

The one and only

The balanced version, BBA-3, has been posted on the BA-3 thread on the
Sticky Portion of the Pass Labs Forum. starting at post # 247.

19th October 2011

NicMac

diyAudio Member

Kitting up for the BBA-3 now...
I think I will first adjust offsets and harmonics on the two "halfs" in SE configuration and then repeat after changing to balanced.
Can anybody tell me the make of the flat trim pots that Papa uses?
Cheers,
Nic

19th November 2011

kenpeter

diyAudio Member

Am I forbidden to attach a .GIF drawing here?
It uploaded fine, but never showed, so I deleted.

An automatic offset balance for BA2 front end...

4th February 2012

illuminetics

diyAudio Member

Inspiring. Nice design, nice build.
Illuminetics-RandyJ

22nd May 2012

Melon Head

Banned

Sorry Nelson
The first performance graph is a little confusing.
Are you saying that the performance of the front end has this distortion (eg driving a 50k load) or are you saying the entire circuit with follower output driving an 8 Ohm load has this distrortion?

Either way I think I will build a balanced version of this amp driving a circlotron (follower output), I designed a while back.

Bloody nice work by the way (as usual).

Introduction