Bryston amp circuitry - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

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 23rd March 2011, 02:39 AM   #1
diyAudio Member
 
Join Date: Sep 2010
Location: Way out West
Default Bryston amp circuitry

Hello, just read an old thread here regarding OLD bryston amps. "Anatech" mentioned that there are a few ways to "improve" overall sound without completely redesigning the circuitry.

I recently received a 2nd 2B from a friend who had it in storage after blowing one channel. The other 2B I own I've had for about 22 yrs (1980 model). I've completely recapped it (replacing tantalums w/lytics, new PSU cans, etc...) and have also replaced all the old carbon resistors with Vishay/Dale RN60 1% Metal films. Replaced old 10K trimpots with 25 turn bourns pots.

Looking @ the old schematics I have, I see bryston made several changes to the 2B circuit over the years. Even though I'm quite capable of replacing components etc. with good success, I still consider myself a "newbie" to electronics DIY since I lack the "know-how" to change/redesign circuitry layout!

Any help/advice (from Anatech or anyone else) on possible changes/upgrades to the 2B circuit would be sincerely appreciated!


Also looking to verify output replacements for 2N3773 / 2N6609 since the 6609's are near impossible to find (one place I found wants $18 each). So far, I've been advised to use MJ15003 / MJ15004.

B-

BR6521 and BR6522 power transistors for a Bryston Amp


`
  Reply With Quote
Old 13th April 2011, 05:29 PM   #2
diyAudio Member
 
Join Date: May 2008
Location: Austin, TX USA
Smile 2N3773 replaced by MJ15003

Regarding your inquiry about replacement output transistors, I can affirm that MJ15003 are drop-in replacements for 2N3773 in the 2003/2006 version of the JLH Class A amplifier.
  Reply With Quote
Old 2nd May 2011, 10:58 PM   #3
diyAudio Member
 
Join Date: Sep 2010
Location: Way out West
Quote:
Originally Posted by senordilys3542 View Post
Regarding your inquiry about replacement output transistors, I can affirm that MJ15003 are drop-in replacements for 2N3773 in the 2003/2006 version of the JLH Class A amplifier.

Yeah, thanks..... I just received a batch (MJ15003/4's) and successfully replaced the blown outputs (3773/6609's).

`
  Reply With Quote
Old 20th September 2013, 05:52 PM   #4
diyAudio Member
 
Join Date: Aug 2009
Default Drop in replacement for 2N6609

Thanks for the information on the 2N3773 drop in replacement. Can you provide drop in replacements for the 2N6609 as well?
  Reply With Quote
Old 21st September 2013, 08:18 AM   #5
Bigred is offline Bigred  Canada
diyAudio Member
 
Join Date: Jul 2007
Quote:
Originally Posted by kwingylee View Post
Thanks for the information on the 2N3773 drop in replacement. Can you provide drop in replacements for the 2N6609 as well?
The 2N3773 and 2N6609 are NPN/PNP complementary pairs. The MJ15003 and MJ15004 are also NPN/PNP complementary pairs. MJ15003 replaces the 2N3773 and 15004 replaces the 2N6609.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
BR6521 and BR6522 power transistors for a Bryston Amp PhantomBox Parts 13 21st September 2014 07:32 PM
Bryston first digital amp Islander Class D 14 9th November 2010 01:02 PM
Book for basic circuitry in amp building? kneadle Chip Amps 2 8th October 2004 01:26 AM
Off Topic but need help on a Bryston 4B ST Amp zhangtony Solid State 3 9th June 2004 09:06 AM


New To Site? Need Help?

All times are GMT. The time now is 10:32 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2