Excessive DC on the amplifiers output can easily be checked even without a multi meter, just turn on amplifier while observing the woofer cone if it moves out and does not return to neutral position after the initial turn on bump - the amplifier have excessive DC on the output. It of course can move in also in case the DC voltage is negative.
Opening up the amplifier and checking rail voltages and Bias current is on a whole other level, and best left to someone whom knows what they are doing.
My gut reaction to this is the very long, highly capacitive speaker wires are at least contributing to this. As someone stated above - try lamp cord.
Best of Luck
Peter
Opening up the amplifier and checking rail voltages and Bias current is on a whole other level, and best left to someone whom knows what they are doing.
My gut reaction to this is the very long, highly capacitive speaker wires are at least contributing to this. As someone stated above - try lamp cord.
Best of Luck
Peter