I recently bought two Polk Audio Monitor 60 Series II speakers and hooked them into my Yamaha RX-V361 Receiver. They worked perfectly fine for a month at any volume then one day the receiver just clicked off. I turned it back on and it said 'Check SP Cable'.
After that, any time my receiver was turned past like +10 volume it would click off and display the same message when I turned it back on and click off within a few seconds if I didn't turn the volume down. From +10-13 it would click off in minutes and then +14 and quieter it wouldn't really turn off.
I ruled out all the basic problems that cause the 'Check SP Cable' problem such as the + and - speaker wires touching and messed around with the wires a lot and concluded that it had to be something not working between the new Polk speakers and the receiver.
The receiver still works perfectly fine with my old speakers as well.
Now I have no idea what's wrong. Whether the speakers are faulty and need to be returned New Egg or whether a part in my receiver slowly burned out from pushing more than it could handle (although not completely burned out since it works fine with older speakers). Maybe I need to adjust some setting on my receiver to make it so the speakers don't overpower it.
I'd appreciate any feedback or ideas on how to solve this issue. Thanks.