SVP-PRO humming, and hissing me off!

Discussion in 'Amps and Cabs [BG]' started by Thumpinthenight, Jan 23, 2006.

  1. Thumpinthenight


    Apr 13, 2004
    New York
    So I have the SVP-PRO pre, and I run with a Carvin 1500 amp. Going direct out to the PA, now with powered subs, I hear this annoying hum, more so than a hiss. Is there a fix for this, or is this tha nature of the beast? I've heard somewhere on this forum it is a problem with older models? Is this expensive to fix? Any help is appreciated. :meh:
  2. Mcrelly


    Jun 16, 2003
    Minnesota, USA
    the usual questions: are you using proper cables for each connection? "instrument" cable for guitar to pre? "speaker" cable from amp to cab? if any of your equipment has a "ground lift" switch try that, else put a ground lift plug on the preamp and see if that helps. looks like this...

    if that don't work: is your guitar buzzing? unplug guitar cable from pre and see if buzzing stops.