lar66BB

First it is a great receiver. What we did was use the radio output to power the 3.5 door and the rear speakers. The rear is as you know mono so we split them and ran new wires to one side. The speakers are JL and Memphis. We used the Bose and to power just the door subs. Also disconnected the center speaker for better separation.
Play everything flat and it sounds great. Just a way of doing it without adding another amp.