Dougdeacon,
I half agree with you. Stereo5's problem was caused by acoustic feedback. Putting in a rumble filter basically interrupted the feedback loop. Of course an ideal solution would be to relocate the TT but since he has placement constrain, rumble filter is a good fix.
If the problem were caused by cart/arm mismatch, oscillation should happen regardless of volume level which was not the case here. Oscillation only started when volume was above a certain level. It was acoustic feedback.
I half agree with you. Stereo5's problem was caused by acoustic feedback. Putting in a rumble filter basically interrupted the feedback loop. Of course an ideal solution would be to relocate the TT but since he has placement constrain, rumble filter is a good fix.
If the problem were caused by cart/arm mismatch, oscillation should happen regardless of volume level which was not the case here. Oscillation only started when volume was above a certain level. It was acoustic feedback.