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PLACEMENT CONSIDERATIONS
The CM6.1SI, CM6.3SI, CM6.5SI and
CM8.5SI stereo input ceiling mount loud-
speakers offer Niles durability,
installation ease and are designed for
unobtrusive installations.
CM Stereo Input loudspeakers are
designed to deliver stereo sound from a
single speaker. Dual tweeters housed in a
stereo imaging faceplate deliver left and
right channels (stereo) while a dual voice-
coil woofer mechanically sums both left
and right channels, creating a convincing
illusion of stereo through a single speaker.
CM Stereo Input speakers are ideal for
locations where a stationary “sweet spot”
is impossible or impractical such as hall-
ways or entryways. They also deliver
quality two-channel sound in locations
that only have enough space to accom-
modate a single speaker such as an
enclosed shower.
FEATURES & BENEFITS
INSTALLATION AND OPERATION GUIDE
CONTINUED OTHER SIDE
The CM6.1SI, CM6.3SI, CM6.5SI and
CM8.5SI are designed to work well in
any standard ceiling. The mounting sur-
face must be at least 3/8” thick.
They will perform well in any air vol-
ume greater than .5 cubic feet.
These speaker are designed to be mini-
mally affected by long lengths of speaker
wire. They will accommodate speaker
wire between 12 and 18 gauge.
WIRING CONSIDERATIONS
PACKAGE CONTENTS
• 1 Piece Speaker With Grille
• 1 Piece Hole Template/Paint Mask
FEATURES & BENEFITS
PLACEMENT CONSIDERATIONS
WIRING CONSIDERATIONS
1.Cut a foot-long piece of coat hanger.
Bend the wire (creating a right angle)
leaving 4-3/4” (5-3/8" for the CM8.5SI)
at one end (this allows for the extra
width of the mounting dogs). Poke the
“L-shaped” wire into the pilot hole and
turn it in a complete circle and move it
into the ceiling cavity to make sure you
have approximately 4” of depth. If the
coat hanger movement is obstructed by
anything, fill the hole(s) with spackle
and try another location (See Figure 1).
INSTALLATION PROCEDURE
INSTALLATION PROCEDURE
Figure 1
Checking for obstructions
behind the ceiling surface.
STEREO INPUT
CM
6.1
SI
STEREO INPUT
CM
6.3
SI
STEREO INPUT
CM
6.5
SI
STEREO INPUT
CM
8.5
SI
SPECIFICATIONS
WOOFER (DUAL VOICE COIL)
CM6.1SI: 6-1/2" talc-filled
polypropylene with a foam surround
CM6.3SI & CM6.5SI: 6-1/2" mica-filled
polypropylene, butyl rubber surround
CM8.5SI: 8" mica-filled polypropylene
with a butyl rubber surround
TWEETER (DUAL)
CM6.1SI & CM6.3SI: 3/4" fluid-cooled
ultra-wide dispersion Kaladex
®
CM6.5SI & CM8.5SI: 3/4" fluid-cooled
ultra-wide dispersion Teteron
RECOMMENDED AMP POWER
CM6.1SI: 3 – 50 watts
CM6.3SI: 5 – 100 watts
CM6.5SI: 10 – 125 watts
CM8.5SI: 10 – 150 watts
FREQUENCY RESPONSE
CM6.1SI: 65Hz to 20kHz +/- 4dB
CM6.3SI: 60Hz to 20kHz +/- 4dB
CM6.5SI: 55Hz to 20kHz +/- 4dB
CM8.5SI: 45Hz to 20kHz +/- 4dB
SENSITIVITY
CM6.1SI: 90dB for 2.82V pink noise
CM6.3SI: 88dB for 2.82V pink noise
CM6.5SI: 89dB for 2.82V pink noise
CM8.5SI: 90dB for 2.82V pink noise
IMPEDANCE
CM6.1SI: 8 ohm
CM6.3SI, CM6.5 & CM8.5SI: 6 ohm
OVERALL DIMENSIONS (with frame)
9-1/4" in diameter
CM8.5SI: 10-5/8" in diameter
MOUNTING DEPTH
3-3/8" (based on 1/2" drywall)
CM8.5SI: 3-3/4" (based on 1/2" drywall)
CUT-OUT FOR RETROFIT
8" diameter
CM8.5SI: 9-1/2" in diameter
WEIGHT
CM6.1SI: 3 lbs. 2 oz.
CM6.3SI: 4 lbs. 2 oz.
CM6.5SI: 4 lbs. 2 oz.
CM8.5SI: 8 lbs. 5 oz.
B
LENDING
H
IGH
F
IDELITY
AND
A
RCHITECTURE
®