Niles Audio Niles RS8Si Sandstone - Manual (Page 11)

Recommended Amplifier Power
We recommend an amplifier with a power rating of ten to two hundred watts per
channel for optimum performance. Outdoor speakers typically require more power
than indoor speakers. The outdoor environment is usually noisier and has less
reflective surfaces to make the system sound louder. Therefore, the use of a higher
power amplifier is recommended.
Ironically, most speakers are not damaged by large amplifiers but by small
amplifiers. When playing the loudspeaker at higher volumes, a small amplifier will
run out of power very quickly. When an amplifier runs out of power it creates
damaging “clipping” distortion. A large amplifier will play at the same volume
without causing this distortion.
If the plan requires connecting two halves of a
RS8Si speaker to an amplifier, in the
one-speaker stereo mode or use the speaker in the two-speaker stereo mode, an
amplifier rated to drive a 4-ohm load of thirty watts to three hundred watts, is
recommended. If you use two halves of an
RS8Si’s on one channel and the
amplifier is not rated for driving a 4-ohm load, the amplifier will run out of power
more easily and could damage the speakers.
See the section “Operation” for more information about clipping distortion.
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Figure 4b Two-Speaker Stereo
Two Zone VC Wiring