Thanks for the picture thread. One thing I noticed is you have the 80's right up against the wall, maybe an inch or two of breathing room. I don't think this is your entire problem, however, your not allowing enough room for the bass to filter out the rear ports into the room.
I would try 6-8" or more out from that front wall to see if that helps at all. Have you verified the polarity of the speaker wire hookups, plus to plus, minus to minus? Have you tried resetting the receiver to defaults? Have you removed the woofers to see if the wires are hooked up?
