was looking for advice.I have a mm4 mixer,has two rear outputs for speakers,rating 4ohm min/total and i have 2 peavey sp-4 cabinets rated 4 ohms.My question is,is there any difference if i hook them up-one speaker per chanel on the amp or hook up one speaker in one channel and run the other speaker off that one.Will there be a different load on the amp???