Niles-audio OS7.3 User Manual download pdf (Page 9)

Figure 3. Wiring directly from a

receiver or ampliﬁer

Figure 4. Incorporating a

volume control

NILES AUDIO CORPORATION – 1-800-BUY-HIFI – 305-238-4373

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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Niles-audio OS7.3 User Manual Page 9