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.
128x128mattmiller

Showing 1 response by wolf_garcia

I found a few phono preamps with 20hz rumble filters and bought one (Cambridge). Problem solved, but I do wonder if a higher end turntable would be rumble free, as the ultra low frequencies inherent in modern phono playback (and the wide frequency range of modern gear) matched with bass reflex speakers seem to make rumble. There doesn't seem to be any acoustic feedback in my current turntable system (which sounds great), so I suppose I won't know until I change the table someday.