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 jperry

"07-21-15: Dougdeacon
When I play any vinyl it goes 4 very quick beats then nothing then 4 very quick beats and so on... it even speeds up when I play 45's
Good observations, which lead one to suspect an irregularity in the new TT's drive or bearing system."

I have never had an issue like this, but amplifying on Doug's suggestion I would put a piece of painter's tape on the side of the platter and see if the pumping correlates with the tape location.

If that happens, and your Rega does not have this issue, you should call your retailer and have a more detailed discussion. It could be that you have a defective turntable and they should work diligently to help you resolve this issue, regardless of whether it is system based or a defective turntable.