On October 8, 2013 at 15:32, MNTommyBoy said...
I did a troubleshoot for a guy this morning who has this receiver, Polk rt1000p towers, m series rears, and cs center.
At the receiver and at most of the speakers, they meter about 4-5 ohms and seem to work. The problem is his Yamaha has recently started to shut off. I told him I thought it was the load on the receiver (being not the 6-8 ohm range) and it had just finally started to get unhappy and quit on him.
Looking at all the Polk manuals, they all basically said "works with 8 ohm speaker output" or something to that effect.....but no real impedance rating on the speaker itself....another strange thing, I thought.
He will probably buy new speakers and re-purpose the old, but I wanted to pick brains first.
Thanks!
Do they have a cat or puppy? They like to chew on wires.
If you have a toner and assuming the wires were run in-wall, remove the wires from the receiver, connect one lead to the positive wire and the other to a grounded device- if nothing happens, connect the lead to the negative speaker wire. If you hear anything, you have a short. If you don't have a toner, use a multi-meter, set to Ohms.
You could also use a short piece of speaker wire to connect each speaker to the receiver- you may need to connect all of them, though. One speaker connected to a flaky amp may not cause the problem to appear. You could also measure DC voltage at the speaker terminals- if you read more than a couple of milli-Volts, it may have leaky outputs.
