My apologies for brevity - the speakers are near the sides of the listening area and placed in the ceiling, 1.5 ft. behind the primary listening area. From primary listening position the left is 7.5 feet and the right is 8.5 feet (these measurements are speaker to near ear). The speakers are...
My solution in similar case was to ceiling mount where you would normally place side (slightly behind listening position)and angle towrd the floor and the front (around 45 degrees). This left the rear two speakers (7.1) about 5 feet behind sides. I tried ceiling sides angled toward listening...