VintageKustom.com
VintageKustom.com is your source for literature and information on the tuck-and-roll vintage Kustom amps from the 60's and 70's, as well as their related products such as guitars and organs . We provide a webboard for help with kustom gear history, technical information and repairs as well as discussions with other collectors.

Home » VintageKustom.com » Replacement Part Suggestions » Transistor replacements anno 2023
Show: Today's Messages :: Polls :: Message Navigator
Return to the default flat view Create a new topic Submit Reply
Re: Transistor replacements anno 2023 [message #28908 is a reply to message #28901] Wed, 25 January 2023 07:11 Go to previous messageGo to previous message
stevem is currently offline  stevem
Messages: 4752
Registered: June 2004
Location: NY
Senior Member
Getting the gain matched well may only be part of the cure in trimming down the DC offset condition you are having.

Some of it can be due to how each Transistor is biased and in turn what they are idling at, just like outputs in a tube amp.

Any resistors around the driver and outputs that are over 1K in value should be 5% in tolerance.
Off the top of my head I know there are a few 3900 ohm resistors in that output section .

Have you replaced c705?
[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Replacement fuse in K200A-2 after 110 -> 230V conversion
Next Topic: .5 watt or 1watt resistors
Goto Forum:
  

-=] Back to Top [=-
[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Sat Jul 13 15:37:58 EDT 2024