Hello! I am new to audio systems and really need help. My current setup is Sony STR-DH790 receiver with Jamo 5.1 speaker setup and one Jamo subwoofer. I currently have connected my surround left and right speakers normally to the AV receiver but my placement for them is behind my couch since my room is so small. Should I connect them as surround back speakers and not have left and right channels at all?