So I currently have an aquamedic 1/2 Titan 1500. It works pretty well and pulls the water down pretty well, but about 2 months ago it got much louder. I pm'ed a few members of the board (Thanks mike, reed, ilham and others) and mike recommended that I see if something needed tightening. So this morning I took off the cover and no kidding, one of the rubber washers that helps to hold the motor in place had broken (see below) leaving only 1 remaining washer on one of the mounts as opposed to the two on the other mounts. Hopefully the problem will be solved after replacement - I emailed aquamedic today.