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-
http://www.diyaudio.com/forums/parts/116472-br6521-br6522-power-transistors-bryston-amp-2.html
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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-
http://www.diyaudio.com/forums/parts/116472-br6521-br6522-power-transistors-bryston-amp-2.html
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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.
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).
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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?
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.
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