Well ive been doing audio for little voer 2 years, but i have a question i should already knoww, but rather have others opinion. Would this work on a 4 channel?
Bsucally, use the front 2 channel for 2 speakers producing a 4 ohm load to each, then using the last 2 channel powering out a 2 ohm load?

 

Yes, it will work if your amp is 2 ohm capable.

 

well that amp puts out 150rmsx4 at 4ohms, or 350rmsx4 at 2 ohms
My question is can the amp put out both 2 and 4 ohms at the same time

 

Yes. If your amp is 2 Ohm stable. Roughly, a 4 channel amp is an array of 4 independent (load wise at least) 1 channel amps. Therefore a load on all 4 channels can be different, but not less than specified minimum load. Power output will be different too. The less is the Re the more power on that channel (the more THD etc), but that’s a different topic