OSD SPHERE-1 Owner’s Manual R AUDIO SPEAKER CONNECTION Left and Right Main Channel Speakers – For optimum performance, place your speakers 6 to 15 feet (2 to 4.5m) apart and at least 24 inches (60.8cm) from side walls. They may also be toed-in slightly for better stereo imaging. The listening position should be approximately 1 to 1.5 times the distance separating the speakers. Refer to figures 1 and 2 for placement.