Soft, but obvious rattle on any deep bass, from moderate volume to full power on an Onkyo AVR3805, the rattle stays the same. I've swapped speakers left to right (its definitely the speaker), removed the grilles, removed all rattle prone objects from the area, inspected the cone(no obvious defects on cone or surround), and compared the compliance with the good woofer(moves easily, feels the same). What now??? I welcome ANY and ALL suggestions, because I simply cannot afford to ship the woofer to Great Plains anytime soon(snif)