[George Graves]

On Sun, 22 Jul 2007 20:15:13 -0700, wrote
(in article ):

I have a 12'' Infinity sub that just stopped playing. can this be
fixed at home? where do you look first?

There's no way to tell from your limited description. Some Infinity
subwoofers were servo types and had their own built-in power amplifiers (and,
in fact, the woofer itself was included in the amps feedback loop, thus the
term servo-woofer) while others were passive and required an outboard
amplifier. If your woofer is of the former type, then it could be anything
from a blown mains fuse to a faulty amplifier to a burned-out voice-coil on
the woofer itself. If the sub is passive, then it could be, again, anything
from a protective fuse to a burnt-out voice coil to a defective cross-over
network.