Maybe it would be more constructive for Raul to say how to get rid of woofer pumping without a rumble filter. Since Raul (and others) have posted elsewhere that the interaction of tonearm effective mass and cartridge compliance can be disregarded with good results, would it be fair to say that mismatching those two parameters is a cause of woofer pumping and constitutes one instance in which we should pay attention to those hoary equations?
Warped LPs are an obvious secondary cause. But we don't play warped LPs very often, do we? (We are connoisseurs.)
Warped LPs are an obvious secondary cause. But we don't play warped LPs very often, do we? (We are connoisseurs.)