HELP-woofer moves alot when playing lps


Hi-
When I play a record on my TT, I get an excessive amount of woofer movement, even when no music is playing. When I lift the arm off the record with the finger lever, the movement stops, and the phono stage is dead quiet. Its only when I drop the needle and turn it up a bit, the woofer starts to move in and out. I dont get this when playing cds, only lps. I have my system on a shelves, with the table onto and my integrated amp directly under my TT. Might this be an isolation issue? Thanks in advance.
tbromgard

Showing 1 response by stringreen

I had this same issue in my system....tore my hair out until someone suggested that it is some kind of RF...from airport, etc. I replaced my cables with shielded ones, and the pumping was gone. ...I'm not saying that is YOUR problem, but it was mine. ..by the way, you CAN change the mismatch of cartridge/arm by adding weight to the cartridge end of the arm.