Hey, so I've got a sony str-k9900p receiver. It puts out 140 watts x 6 channels plus a subwoofer at I think, 6 ohms. I've got a set of 5 sony speakers at 142 watts at 3 ohms. My question is, can I do this? Am I supposed to be hooking up a 6 ohm receiver with 3 ohm speakers? I've been told that its okay but not advisable because it can overpower the receiver. If that's the case, what can I do to protect the receiver? Ohm converters? If those exist. Or will it be okay as long as I keep the receiver well ventilated? Thanks for the help in advance.