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!
Sadly a lot of the newer amps and receivers with their digital power supplies get pretty grumpy with 4 ohm loads these days! Not like the good old days, when you could just about arc-weld!
Even a speaker labeled as 4 ohms can dip down below 4 ohms, depending on the program material being played, which of course will trigger protection. 8>)
