Got a IPR1600 coming and was wondering how to operate the 2 channels in parallel mode. I checked the manual on line and from what I can see is it's done by patching the 2 channels with a 1/4'" using the thru put.... is this correct? Also ... If I wanted to run just one channel, does there have to be a load on the unused channel? Again, I read the manual but didn't see any info regarding this. Anybody have any hands on experience? Thanks in advance..