Niles RS5 Installation Manual page 7

SINGLE SPEAKER STEREO MODE (SI MODELS ONLY)
In one-speaker stereo mode, each connection cable of the SI model loudspeaker
is connected to a separate amplifier channel and each loudspeaker cabinet
plays in stereo. This configuration gives you the benefit of covering a larger area
than the traditional two-speaker stereo mode. Loudspeakers should be spaced
to properly cover the listening area. The SI models will typically provide proper
coverage for an area 20-30 feet around the front of the loudspeaker (20-24 feet
for the RS6 models and 24-30 feet for the RS8 models).
Figure 1 shows how this would work for a square area using the RS8Si's in the
one-speaker stereo mode. The loudspeaker coverage pattern is shown in the
diagram.
Figure 1.
Stereo Coverage 4 speakers
With the loudspeakers wired in the one-speaker stereo mode you can cover
large areas with the highest quality stereo imaging available.
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