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 3 responses by reb1208

Are your speakers sealed or ported.

This is a very common problem.

Search the net as this subject has been covered in depth countless times.
You can reduce the size of the ports with some cut foam strips (assuming your handy). This will increase the damping factor and reduce the pumping. A peripheral turntable platter clamp may also help. A subsonic filter did not have any affect in my st-up. FYI, I use a pair of ported full range floor standing tower speakers with the port diameter reduced. Note that is would be extremely rare for your woofers to be damaged. Don't let the handful of responders get you paranoid.