Matt, Take a second look at your own logic in your post of 08/02. If the woofer pumping in your system were due to "the records we play", then a slab of granite placed under the tt could not have much effect on the problem, because the source of the energy that pumps the woofer is or would be endogenous. If the granite helps, then it is more probable that the speakers are positioned such that they are interacting with your tt by introducing mechanical energy that is vibrating your tt shelf via the floor, etc. So, the granite experiment might further move you to re-position the tt or the speakers in your listening room.
Woofer pumping WHY??
Hello All, I have an older REL B2 series. I love this sub. I recently received a new Project Xtension 10 with Clear Audio Maestro Ebony v2. After a couple days I noticed bad woofer pumping on several records I like to listen too. When I brought it up to Needle Doctor they told me it was my records and said it worked fine in there store. Now my REL is blown! I am so upset at myself for not taking this matter more seriously. Now I am purchasing a KAB rumble filter because I am not going through this again. Is this a cartridge mismatch?? Because on my REGA with Dynavector 10X5 It did not do this woofer pumping nearly as bad. AND I do remember putting a DENON DL103 on my RB301 and this same woofer crazy action occurred!! Immediately took it off that arm. I just spent $4100 for this Xtension10/CA Maestro and now I am scratching my head. Hmmmm.