Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

Burning Amp BA-3
Burning Amp BA-3
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th November 2017, 12:14 AM   #2291
Zen Mod is online now Zen Mod  Serbia
Official Court Jester
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Burning Amp BA-3
yup ......... almost every part doing two or more roles in same time , so ......... everything is written in article ......... nomenclature hopefully tighten up in my comment following it
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
  Reply With Quote
Old 6th December 2017, 09:46 AM   #2292
Sprags is offline Sprags  United States
diyAudio Member
 
Join Date: Mar 2013
Location: Elgin,illinois
I could have sworn I saw a build guide for the BA-3 Complimentary. Now it appears that there isn't one. I guess I'll never build that amp.
  Reply With Quote
Old 6th December 2017, 09:48 AM   #2293
Dennis Hui is online now Dennis Hui  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: Toronto, Canada
Burning Amp BA-3
Is this what you're thinking of?

BA-3 Amplifier illustrated build guide
__________________
We are fearless amplifier builders. A little heat doesn't scare us at all.
- NP 2002
  Reply With Quote
Old 6th December 2017, 09:50 AM   #2294
Sprags is offline Sprags  United States
diyAudio Member
 
Join Date: Mar 2013
Location: Elgin,illinois
Sure enough right after posting the last reply I found it...thanks
  Reply With Quote
Old 14th December 2017, 07:47 AM   #2295
wengtech is offline wengtech
diyAudio Member
 
Join Date: Feb 2012
@juma
Hello Juma,
you have made F5 with latfet before,
is it possible to make BA3 output (prefer single ended)
with latfet like 2SJ62 2SK1058 or 2SK135 2SJ50,
would you share the schematic please?

Thanks.
  Reply With Quote
Old 14th December 2017, 08:05 AM   #2296
juma is offline juma  Germany
diyAudio Member
 
juma's Avatar
 
Join Date: Nov 2005
Location: Berlin
Hi Wengtech,
it's surely possible but I'm not really fond of that amp so you'd better ask someone else to design that circuit for you.
Best regards
__________________
Please don't use private messages for question related to audio projects. It defeats the purpose of the forum.
  Reply With Quote
Old 14th December 2017, 09:45 AM   #2297
wengtech is offline wengtech
diyAudio Member
 
Join Date: Feb 2012
Thanks Juma.
  Reply With Quote
Old 5th February 2018, 02:12 PM   #2298
Rubber Soul is offline Rubber Soul
diyAudio Member
 
Join Date: Nov 2014
Hi, I have a question. I bought a ba-3 with follower ready made. The DC outset is far too low on the left channel. Right channel is perfectly stable, but the left is drifting to minus and I can´t get it to 0. If I increase bias on p1 DC outset decrease. I appreciate if someone could guide where to start my troubleshooting.
I am a noobie so please be gentle. thanks in advance.
  Reply With Quote
Old 5th February 2018, 03:49 PM   #2299
AndrewT is offline AndrewT  Scotland
R.I.P.
 
Join Date: Jul 2004
Location: Scottish Borders
Slow drift can be down to temperature variations. And unlikely to be a bad joint.
Sudden changes can be the result of unheard oscillation.

Monitor output offset and output Noise+Hum over an extended period from completely cold to fully warmed up.
Do not attach speakers until you are sure it is operating correctly.
__________________
regards Andrew T.
  Reply With Quote
Old 5th February 2018, 04:09 PM   #2300
6L6 is offline 6L6  United States
diyAudio Moderator
 
6L6's Avatar
 
Join Date: Oct 2010
Location: Denver, Colorado
Burning Amp BA-3
Rubber Soul -

Please pose well-lit, in-focus photos of your amplifier.

Which PCB does it use?

Which P1 are you adjusting?

Where are you measuring offset, front-end or output?

What are your actual measurements of DC offset on the speaker output with a cold amp and after 30min?
  Reply With Quote

Reply


Burning Amp BA-3Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Burning Amplifier BA-1 Variac Pass Labs 356 17th January 2017 11:54 PM
Burning Amplifier BA-3 Nelson Pass diyAudio.com Articles 39 14th October 2016 11:36 AM
Burning Amplifier BA-1 Nelson Pass diyAudio.com Articles 3 24th October 2011 02:53 AM
WTB: Burning Amp BA-1 or BA-2 jdubs Swap Meet 0 23rd March 2011 03:16 AM
FS: two burning amps (one each BA-1 and BA-2) without drivers Eric Weitzman Swap Meet 15 17th February 2010 02:35 AM


New To Site? Need Help?

All times are GMT. The time now is 12:57 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki