The revised description you've provided is a bit different problem than your original post suggested. Woofer-flexing due to infrasonic signals can, as you imply, be caused by warped records, and may also be caused by a cartridge/tonearm mismatch that causes the tonearm resonance to fall below 8-9 Hz. Since neither of these seem to be the cause of your problem, I'm inclined to think that you have some sort of low-frequency feedback loop somewhere in the amplification chain, but that's outside my technical expertise. You might try dropping a note to our resident tech guru, Sean, and see what he says. You might also try replacing the spring suspension in your turntable with the same kind of Sorbothane pucks that cured the acoustic feedback problems I experienced with VPI turntable.
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- 18 posts total
- 18 posts total