More about 4-ohm speakers + A/V Receiver
The problem is there is no sucj thing as a four ohm speaker. Impedance varies through the curve. If the lower dips are in a higher frequency, then it should be fine, but if its in the bass/midbass, region I wouldnt. Some speakers that spec 4ohm have dips to the high 2s low 3s in the low region and not many AVRs do well with that.
I have been using my Denon 3806 Receiver for five years now with my Axiom M80s, V150 center, and QS8 surrounds with NO problems in my current space. Both this receiver and the Pioneer 1120 are rated at 120W/7 channels and both have THX Ultra Certifications, so naturally I would like to know if I could switch out the receiver for my setup.
When the Audioholics staff reviews A/V receivers, sometimes they mention the 4-ohm capabilities and sometimes they don't. Since this was just a first-look, no particular mention was made about this, so I am just trying to elicit more specific information. For example here is part of Tom's conclusion about the Denon 4310CI:
"The Denon AVR-4310CI proved to be a true powerhouse for its price class. We honestly weren’t expecting such stellar results in a sub $2k receiver that is jammed packed with features. It was able to exceed its continuous fullbandwidth per channel power rating of 130 wpc by delivering a whopping 163wpc into 8 ohms and 267 watts into 4 ohms. With the standard 1kHz ACD test, the AVR-4310CI delivered 95 wpc which again is excellent. The AVR-4310CI should be able to power most moderately efficient loudspeakers to deliver theatrical power levels in medium to large sized theater rooms."
And here is the conclusion of the Yamaha Z7 vs Pioneer SC-07 in this regard:
"Unlike the Pioneer SC-07 (which utilized Class D ICE amplification) I had in review at the same time, the Yamaha did NOT have any issues driving 4 ohm loads at full power and bandwidth. The Yamaha was also a bit more powerful driving 8 ohm loads (170wpc vs 150wpc of the Pioneer)."
