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).
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).