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Old 8th April 2010
  #22
Here for the gear
 

Transistor Replacements

Jim:

Did you have to change any of the compensation in the circuits where the BC309B and BC239C were replaced?

Are you also using 2SA1316 to replace the 1st stage mic preamp on the input module (which is a selected BC560B)?

--Scott Smith

Quote:
Originally Posted by Jim Williams View Post
I've had good results replacing the noisy, spitty BC transistors with Toshiba 2SA1316 PNP and 2SC3329 NPN. Those are very quiet and smooth. Those LM301 opamps have to go too, I replace them With National LME49710NA.

Goodbye noise, hello fidelity.

Jim Williams
Audio Upgrades