Record Clamp for Rega P5?

I would be very cautious about using a very heavy weight as opposed to a clamp on a Rega turntable.

I use a clamp that holds the record down by clamping on to the spindle.

The Rega tables have very very low torque motors and I'm not sure how long they would stand up to having several extra pounds to spin around. At the very least, if you're going to use something heavy, you should start the platter spinning with your hand before you switch on the motor so that the motor doesn't die trying to start that hefty weight spinning.

Like revdeg I also use the Souther Clever Clamp and like the results with my P25.

Try a Bren1 record clamp. Works with a Rega, only 13oz.

I'm using the Michell "R" clamp on my P5 (got it from Music Direct) -- it's light in weight (delrin body and anodized aluminum knob) and doesn't figure to put any undue strain on the motor. I tend to use it only with warped records, and it seems to help some (makes me feel better, anyway).

I also use a Michell 'R' on my Rega P7, but only for warped records (only helps when warp is concave - a periphery ring is needed for the convex side).