AVS Forum Addicted Member
Join Date: Nov 2006
Location: Colorado Springs, CO
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The problem is that few receivers claim to support 4 ohm speakers on all channels (some will say it's ok to run them on the left/right channels only.)
I just buy 8 ohm speakers. Then you don't have to worry about it.
If you already have 4 ohm speakers, you either have to take a chance or go with something like a high end Onkyo model that claims to have 4 ohm certification (whatever that is, THX?)
I suspect most mid range and up receivers can handle 4 ohm speakers on movies, because they don't get a continuous work out. Music is perhaps a different issue - but when only using two speakers, the load on the receiver is easier than if you were to use all channel stereo.
I remember playing a Yamaha stereo receiver very loudly with A+B speakers connected, all four speakers being 8 ohm. That's a 4 ohm load right there. So maybe it's common for receivers to handle 4 ohm speakers with music with only two channels driven. And maybe it's ok to play movies with 4 ohm speakers all around, because average power needs are so low, and high demands are over a short period of time.
I still think it makes sense just to use 8 ohm speakers. I don't know why they make 4 ohm speakers for home theater use when it's confusing and possibly worriesome to consumers.
"But this one goes up to 11"