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Figure 3. Wiring directly from a
receiver or amplifier.
Figure 4. Incorporating a
volume control.
NILES AUDIO CORPORATION – 1-800-BUY-HIFI
RECOMMENDED AMPLIFIER POWER
For optimum performance, we recommend amplifiers with the following power ratings:
For the OS 5.3 loudspeaker, 5 to 100 W per channel
For the OS 6.3 loudspeaker, 5 to 125 W per channel
For the OS 7.3 loudspeaker, 5 to 150 W per channel
Ironically, most loudspeakers are not damaged by large amplifiers but by small amplifiers. If you
are playing at high volume, 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 distorting. See OPERATION on page 17 for more information about
clipping distortion.
PLACING LOUDSPEAKERS FOR THE BEST SOUND QUALITY
An OS loudspeaker’s dispersion pattern is very broad. This allows good sound quality over an
extremely large listening area. However, if a single pair is positioned to provide coverage of a very
large room or patio, you will have “hot spots” of loud sound when you are near the loudspeakers.
The best way to avoid hot spots for a large space is to use several pairs of loudspeakers evenly
spaced throughout the room. A good rule of thumb is to install a pair of loudspeakers for every
200 to 400 square feet of listening area. Your local Niles dealer is a good source for advice on
loudspeaker placement for your particular installation.
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DS00425BCN_OS_3.indd 9 6/24/05 4:13:20 PM
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