HELP-woofer moves alot when playing lps

Hi, **I suspect you are correct that it is NOT cart/arm mismatch (its rega and clearaudio). If I ignor the issue, wont the woofers be damaged by too much pumping?**

Right the first time. It's unlikely an arm/cart resonance problem and yes the woofers can be damaged eventually, especially if they bottom out. The major cause of woofer pumping is acoustic or mechanical feedback. If you get a wall shelf or suitable support and position where your speaker isn't playing directly on it, chances are you will cure the problem. If this isn't feasible maybe you should get a subsonic filter as suggested.
Regards,

We don't know what speakers we're talking about here. Whether or not the woofers could be damaged depends on the size of the woofer, it's excursion capabilities, and the extent of the pumping. MANY woofers will be damaged by repeated linear excursions in excess of their capabilities. If the pumping is severe, it's a recipe for disaster. At the very least, you're getting lots of distortion. If you get/make a more suitable mount for your TT, it will probably sound much better and eliminate the pumping. If the pumping is not severe and bottoming out, you can probably ignore it, and wallow in mediocrity.
Regards,

Hi Atmasphere,
**Woofer pumping is a symptom of an incorrect cartridge setup, wherein the cartridge compliance combined with the effective mass of the arm causes the combination to have a mechanical resonance outside the range of about 7-12Hz.**

That's possible but often a compliant cartridge on a med/heavy arm won't cause pumping, even if it's resonating at 6Hz. Acoustic or mechanical feedback is a much more likely cause. Turntables on top of equipment racks, susceptible to mechanical shock, are more prone to have problems. They are likely to have problems even when there is no cu/arm mass mismatch.
Regards,