It's the speaker that is faulty. I took it out the cabinet and hooked it up to another amplifier (Quad 606 MkII) and signal generator. Sure enough, it started rattling badly below 52Hz. Here goes ~$700 to order a replacement speaker (p/n ZZ14102) from B&W NA.
Subwoofer Rattle
I have a B&W ASW850 subwoofer that is rattling in the 20-40Hz range (tested with a signal generator). Although I have never consciously over driven the unit, I assume this just means the voice coil is shot and I need to replace the speaker? How easy is this to do?
Thanks for your help.
Marcus
Thanks for your help.
Marcus