I have a Brinkmann Bardo which is a "stiff" construction that has no dampening built into it. The solution for me was to go with a 32x45x3 cm stone (Nero Assoluto) and beneath it 4 dampening feet made from foam. The critical dampening weight for the 4 feet is 28 kg - and that happens to be the same as the combined weight of the stone slab + Bardo. If I place the stylus on the record and turn up the volume to normal level I get no feedback when knocking on the rack upon which the stone and turntable sits. Hope this could work for you as well.
|