On June 26, 2006 at 20:17, rhm9 said...
We ran a new 12/2 across the
floor and left it connected (our crawlspace inspection
revealed no rodent or other damage and there are
no shorts in the wires).
And???? What was the result?
Ted's right.
Troubleshooting is a process of elimination. You've already eliminated the speaker itself, so now you know it's upstream of the wire-to-speaker connection.
Now, you need to know whether it's upstream or downstream of the next place the signal is accessible: the receiver-wire connection.
Try swapping the let and right rear speaker wires at the receiver's terminals and see if the problem stays in the same corner.
If this is the case, I bet you find a poor splice in the wire somewhere. If not, and it moves to the left, it's the receiver, as metioned above.