1. Please take 30 seconds to register your free account to remove most ads, post topics, make friends, earn reward points at our store, and more!  

SVT-4 Pro - Power Amp A much quieter than B

Discussion in 'Amps and Cabs [BG]' started by KeithGibbons, Jan 5, 2020.


  1. Just wondering if anybody has had the same issue with their SVT-4. Was playing through Power Amp A only for some time into a single cabinet. One day I turned the amp on and it was really quiet. Switched over to Power Amp B and it’s fine.

    I’ve checked the stereo/mono modes, tried running bi-amp mode etc. I even plugged into the Effects loop returns for both PAA & PAB and am getting roughly the same result. Less noticeable without the preamp section, but still getting a volume drop.

    I guess my question is: Would a dead preamp tube still be the issue even though I’m bypassing the preamp when plugging directly into the effects loop? Or should I just take it to a tech?

    Thank you in advance.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.