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Title: Polytone Mini-brute Electric Buzz
Post by: cmarks on December 23, 2009, 01:09:24 PM

Hi all,
I bought a used Polytone Mini-brute that was in excellent condition at purchase. I played an electric violin through it for several months before the problem developed.

At the point where I cross a certain low frequency on the instrument, the amp goes into some sort of feedback loop. It emits a very loud, deep, erratic electric buzzing that sounds like a ray gun from a saturday morning cartoon. Does anybody know what's going on?

Title: Re: Polytone Mini-brute Electric Buzz
Post by: J M Fahey on December 24, 2009, 11:41:52 AM

Post some MP3.
Does it vary with the controls (Volume, tone, etc.)
Does it disappear if you bump on the amp or knock some panel?

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Solid State Amplifiers => Amplifier Discussion => Topic started by: cmarks on December 23, 2009, 01:09:24 PM