Hey thanks guys, I know Yamaha manual says its ok, but I just wanted to hear from someone with some real world experience. The only thing I could find was on epinions where a guy had bought a Yamaha RX-V1900 and complained about having to really crank it with his 4ohm speakers. He said he talked to Yamaha and they said it was normal. The dealer where the guy bought it from told the guy to not switch the receiver to 4ohm, just leave it set for 8ohm. I dont think Id do that though. I wouldnt be pushing the M80 to hard anyways. I dont have alot of space above the yamaha in the entertainment stand, although it is all open. I was think of getting a small fan (computer type thing) and plug it in the back of the yamaha and mount it somewhere. That way Id always have good ventilation.
