Woofers getting workout, but no bass

Check phase

Could also be DC at your amp output.

Check phase: you mean speaker phase? This is correct.

DC at amp output: can you explain this?

I probably should have mentioned that I'm using a Triplanar/Dynavector XV-1s.

Read up on the rumble and it does describe my situation. How normal is this? Is there something that can be done or does one just live with it?

The cause of this problem is most likely very simple. Is the woofer pumping worse at the beginning of the record and then lessens as the tonearm moves toward the center of the LP. If so, the outer edge of the LP is probably not coupling with your platter. You may even be able to see light between the outer edge of the record and the platter when viewed on-plane from the front.

If you are using a clamp, try lessening the downward clamping pressure to see if that helps. If it is a problem with LP/Platter coupling, the best solution is a peripheral ring (like the one sold by TTweights and others), but some say that these rings deaden the sound as well. I don't have one so I don't personally know about that.

If the pumping occurs across the entire LP, then Cpk likely has indentified the cause(s) above.

Good luck.

Madfloyd, you system thread lists TW Acustic Raven One as your turntable.

If that's the table playing and your woofers are pumping it's not due to rumble. The Raven is a quiet turntable with very low rumble but it could be susceptible to mechanical feedback which causes low frequency pumping you describe.

Many turntables are sensitive to vibration from footfalls or speaker bass output. How was your Raven set up, a professional familiar with the product? What kind of stand is it resting on, and is your floor completely solid or perhaps pier and beam (suspended).