Results 1 to 2 of 2

Thread: Biasing a Custom Vibrolux Reissue???

  1. 03-05-2005, 01:15 PM #1
    ragtweed
    ragtweed is offline
    Forum Member
    Join Date
    Feb 2004
    Posts
    644

    Biasing a Custom Vibrolux Reissue???

    I recently acquired a CVR amp and it appears that there is no bias trim pot in this amp. Any forum members know which resistor should be swapped out to set the bias, or better yet if an adjustable bias pot can be wired into the circuit?
    Reply With Quote Reply With Quote
  2. 03-06-2005, 10:37 AM #2
    ragtweed
    ragtweed is offline
    Forum Member
    Join Date
    Feb 2004
    Posts
    644

    Re: Biasing a Custom Vibrolux Reissue???

    Ahhh,
    I meant Custom Vibrolux REVERB, not reissue! Anyhow, it looks like R59 is the bias resistor and is rated at 18K, 1/2watt. I might try a 15K resistor. I've got a pair of tubes that are well matched, but run a little too cold in this amp. While I'm at it I might as well dump the 470 ohm, 1 watt screen grid resistors (R47&R48) for some 1K, 3watt resistors.
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules