Figure 3. Wiring directly from a
receiver or ampliﬁer.
Figure 4. Incorporating a
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
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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