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?
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?