Switch Adjustments; Painting The Grilles; Installing The Grilles - Niles CM Installation Manual

INSTALLING THE LOUDSPEAKERS
6. Prep the speaker wire by stripping 1/4"-1/2" from each speaker lead.
Twist the strands or tin the leads with solder to ensure there are no stray
strands that could short and possibly harm the amplifier.
7. If you've chosen to use insulation behind the loudspeaker, place it
through the hole and center it on the opening. If using paper-backed
insulation, it should be placed so that the paper side is away from the
loudspeaker.
8. The speaker has black and red
spring-loaded connectors (Figure 3).
Black is for the negative (-) wire and
red for the positive (+). It is important
to observe correct wiring polarity.
This is especially important for the
Stereo Input (SI) Loudspeaker. If you
have wire other than black and red,
make sure you connect it the same
on the amplifier end as the speaker
end. Failure to do so will adversely
affect the loudspeakers' performance.
9. Once the speaker wires are
connected, carefully slide the
loudspeaker into the opening hole
(Figure 4). While holding the speaker
in place, tighten the mounting screws
to secure the speaker to the drywall.
We recommend using a motorized
screwdriver. Be careful not to over
tighten. The CM loudspeakers feature
spring loaded mounting clamps that
allow the speaker to remain flush
with the ceiling, even if the
drywall shifts or expands.
note: do not carry the speaker
by the tweeter or tweeter
bridge. this may damage the
speaker.
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Figure 3. Spring-loaded speaker wire
connectors.
Figure 4. Installing a
CM loudspeaker.
Mounting clamps require
1" clearance to the sides
of the hole opening
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SWITCH ADJUSTMENTS

TREBLE SWITCH
(PR and Hd models)
The three-position tweeter switch allows you to adjust the high frequency output
of the loudspeaker to compensate for room acoustics. The center position,
marked 0, does not affect the tweeter's output. Moving the switch to the –
position reduces the tweeter output by 3 dB to compensate for bright rooms
(tile or wood floors, sparse furnishing, tall ceilings). Moving the switch to the
+ position increases the tweeter output by 3 dB to compensate for absorptive
rooms (carpeting, lots of drapery, plush furniture, etc.).
DIFFUSE / DIRECT SWITCH
Use the Diffuse setting for movies and general music listening since most films
are mixed using non-localized surround effects and music is usually recorded in a
favorable acoustic environment. Use the Direct setting for discrete multi-channel
recordings that equally emphasize front and surround sounds. For 7.1-channel
surround sound systems, use the Diffuse setting on the side effects loudspeakers
and the Direct setting for the rear effects loudspeakers.

PAINTING THE GRILLES

The CM loudspeaker grilles can be painted without priming, but the fabric scrim
must first be removed. The installation template has die cut standoffs that can be
used to position the grille off the ground while painting. Use several light coats
sprayed from different sides and angles to cover all surfaces and not fill in any
holes. If you do fill some holes, use compressed air to open them before the paint
dries. It may be helpful to slightly dilute the paint to prevent it from clogging the
grille holes.

INSTALLING THE GRILLES

The Niles MicroThin™ speaker grille installs magnetically over the speaker.
Carefully center the grill over the speaker and let the magnets do their work,
verifying that the grill sets flush against the ceiling at all edges.
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