My amps making buzzing sound from my speakers that when i put my finger to the negative terminal (banana plug. Exposed) and to the chassis, it stops. The sound is verrry feint and also is the hum that disappears together making the amp pretty much dead quiet.
I have back to back diodes that connect the psu gnd of the amp to the chassis and the earth terminal, and after i added a 1.5k ohm resistor parallel to the diodes the buzzing noise stopped.
My questions are-
was this a ground loop issue or more likely an oscillation?
And instead of the 1.5k ohm resistor can i try a small cap? Because i dont like the way the resistor changed the sound.
I have back to back diodes that connect the psu gnd of the amp to the chassis and the earth terminal, and after i added a 1.5k ohm resistor parallel to the diodes the buzzing noise stopped.
My questions are-
was this a ground loop issue or more likely an oscillation?
And instead of the 1.5k ohm resistor can i try a small cap? Because i dont like the way the resistor changed the sound.