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The best installation location from the acoustical performance standpoint depends on what you want
from your system. Typically in-ceiling speakers are used one of two ways: 1. To provide general sound
and music coverage to a room, such as a den, dining room or in a commercial situation. 2. As surround
sound speakers in an A/V system.
Since the speaker installation is permanent and the furniture placement may not be, you should first
determine the best long-term location for the speakers—one that will accommodate future relocation of
the furniture, while still providing well-balanced sound to the primary listening area.
For the most balanced sound, place each speaker at an equal distance from the prime listening position.
If you are installing two pairs of speakers in a room you can consider putting the speakers for the two
channels diagonally from each other. This is also true in commercial installations. For the sake of appear
-
ance, you might want to align the speakers with the light fixtures and other ceiling details.
Or you could take advantage of the bass sound reinforcement provided by placing a speaker closer to
the juncture of the ceiling and wall. Installing a speaker approximately 18-inches from the ceiling/wall
corner will provide noticeable bass reinforcement. Installing the speaker closer to a corner is not recom
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mended.
The ideal location for speakers used in
Home Theater is easier to establish. Sur
-
round speakers should produce very diffuse
sound. In a typical 5.1 surround sound sys
-
tem the surround speakers should be placed
far to the sides of, and somewhat behind the
main seating area. The speakers will produce
a more diffuse sound if the pivoting tweet
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ers are angle toward the side and rear walls.
In 7.1 systems the side speakers should be
placed about midway between the front and
surround speakers and about the same dis
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tance apart as the surround speakers.
There is a good deal more flexibility in the
placement of the PRi85Sub. The ear cannot
easily locate the source of deep bass sound.
Install the PRi85Sub anywhere in the general
vicinity of the other speakers. As with the
other models, installing it about 18-inches
from the ceiling/wall corner will provide
some bass reinforcement.
Speaker Wires
After the speaker installation locations have been chosen, you must run wires to the amplifier that drives them.
In addition to the normal speaker wire considerations, the electrical codes in your area may require the use of
special wire that is resistant to exposure called “plenum rated” wire. Check with an electrical safety inspector in
your area to see if such wiring is required.
The gauge of the wire is also important. Typically you should use at least 14 gauge wire. That is good enough for
runs up to 50 feet or so. For runs of more than 50 feet use heavier 12 gauge wire.
5.1 System Surround Speakers
7.1 System Side Channel Speakers
PRi85Sub
142-002648-D OWNERS MANUAL PRI.i4 4 10/4/07 3:26:39 PM