Niles Audio Speaker CM7SD User Manual

c e i l i n g m o u n t  
C M 7 S D I N S T A l l A T I o N G u I d e  
DeSigneR AeStHeticS  
AuDioPHile PeRFoRmAnce  
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CONGRATULATIONS!  
INTROdUCTION  
Thank you for choosing the Niles CM7SD Loudspeaker. With proper installation,  
use, and care, your loudspeakers will deliver years of listening enjoyment. Niles  
manufactures the industry’s most comprehensive line of custom installation  
components and accessories. For information on our complete product  
assortment, please visit us at: www.nilesaudio.com.  
The Niles CM7SD Loudspeakers deliver an uncompromising combination of  
designer oriented aesthetics, superb sound performance, and ease of installation.  
Small footprint and low profile, MicroThin™ magnetically attached grilles provide  
the look that today’s homeowners desire.  
FEATURES ANd BENEFITS  
TABLE OF CONTENTS  
dESIGNER AESThETICS  
Introduction  
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4
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6
8
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Magnetically attached MicroThin™ round speaker grilles ensure a clean,  
unobtrusive designer appearance that blends with the room’s aesthetics. Optional  
square grilles provide added design flexibility.  
Features and Benefits  
Parts Guide  
INSTALLATION EASE  
Four easy to use mounting clamps permit quick installation. Weather-resistant  
construction enables installation in moist areas such as bathrooms or outdoors  
under eaves.  
Installation Considerations  
Installing the Loudspeakers  
Painting the Grilles  
Installing the Grilles  
Applications  
INSTALL WITh CONFIdENCE  
The best-built loudspeakers deserve the best protection—the Niles Lifetime  
Limited Warranty.  
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NILES AUDIO – 1-800-BUY-HIFI – 1-760-710-0992  
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PARTS GUIdE  
INSTALLATION CONSIdERATIONS continueD  
NOTE: bE VEry carEful whEN lOcaTiNg ThE spEakErs. VErify all lOcaTiONs arE  
clEar Of ObsTrucTiONs bEfOrE cuTTiNg ThE firsT hOlE.  
PACKAGE CONTENTS FOR:  
CM7SD  
Each speaker requires two-conductor wiring of sufficient gauge. The gauge  
depends on the length of the wire. For recommendations, please refer to (Figure 2).  
(Stereo Input loudspeakers require four-conductor wiring).  
(1) Niles CM loudspeaker, (1) Magnetically attached round grill, (1) Hole template  
with painting standoffs, (1) Owner’s manual, (1) Warranty card.  
INSTALLATION CONSIdERATIONS  
Distance from speaker to amplifier  
wire gauge  
Recommended tools for installation:  
Less than 80 feet  
16  
• Cordless screwdriver  
• One inch #2 Phillips tip  
• 1/8” Drill bit  
• Measuring tape  
• Stud finder  
• Spackle  
• Painters tape  
• Drop cloth  
80 to 200 feet  
14  
12  
• Optional - a 24” x 24”  
piece of R19 insulation  
More than 200 feet  
• Drywall saw  
• Wire stripper  
• Cable ties  
• Pencil  
• Laser plumb bob  
• 12” -14” Coat hanger wire  
Figure 2. Speaker Wire Gauge Guide  
When running loudspeaker wire inside walls or ceilings, use special jacketed  
cable (CL-2 or CL-3 rating) to protect the wire and for fire prevention. In some  
municipalities, conduit is required. For a trouble-free installation, low voltage wire  
such as loudspeaker wire must be in accordance with the National Electrical Code  
and any applicable provisions of the local building code. If you are unsure of the  
correct installation techniques, wire jacket, or type of conduit to use, consult a  
professional audio/video installer, building contractor, or the local building and  
inspection department.  
The CM7SD requires an 8-1/2”  
(21.6 cm) diameter hole opening  
and a minimum of 2-3/4” (7.0 cm)  
depth when measured from the  
exterior face of the drywall. To the  
sides of the hole you will need 1”  
(2.54 cm) for the mounting tabs to  
clamp the speaker to the drywall.  
2-3/4" (7.0 cm)  
Depth from Drywall  
Exterior  
Figure 1. Required dimensions for installation in ceiling.  
(cONTiNuED ON NExT pagE)  
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INSTALLING ThE LOUdSPEAKERS  
INSTALLING ThE LOUdSPEAKERS continueD  
It is often easier to lay the speakers out on the floor and then transfer the  
locations to the ceiling with a laser plumb bob. If you are using new construction  
brackets, place string across the centers of the bracket to provide a way to align  
the bracket to the laser. Remember, you will need 1” (2.54 cm) to the sides of the  
mounting hole for the mounting clamps to secure the speaker to the drywall.  
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.  
1. Once you have determined a possible position for the hole cutout, drill a  
1/8” pilot hole just barely through the ceiling (1/2” to 5/8” deep in most  
homes) in the center of your proposed loudspeaker location. BE VERY  
CAREFUL NOT TO DRILL THROUGH EXISTING WIRES, PIPES, OR  
STRUCTURE. IF YOU FEEL ANY EXTRA RESISTANCE AS YOU ARE  
DRILLING, STOP.  
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.  
If you have wire other than black  
and red, make sure you connect it  
the same on the amplifier end as the  
2. Cut a foot-long piece of coat hanger. Bend the wire (creating a right angle)  
leaving 5-1/2” 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 2-3/4” of depth. If the wire’s movement is obstructed  
by anything, fill the hole(s) with spackle and try another location. (If there  
is any risk of uninsulated electrical connections within the ceiling area,  
use insulating gloves or other materials or consult with an installation  
professional before proceeding).  
speaker end. Failure to do so will  
adversely affect the loudspeakers’  
performance.  
Figure 3. Spring-loaded speaker wire  
connectors.  
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.  
3. If the coat hanger moves freely in a complete circle and you have  
sufficient depth, tape the template to the ceiling and proceed to layout the  
other speakers. Once you are comfortable with all speaker locations, use  
a pencil to lightly outline the circular template.  
4. Drill the starting point of your cut with a 1/4” bit.  
5. If you are cutting drywall, use a sheetrock or keyhole saw. Cut the hole  
with the saw at a 45° angle. That way the drywall section can be replaced  
cleanly if there is an unseen obstruction behind the wall. IMPORTANT: BE  
VERY CAREFUL NOT TO SAW THROUGH EXISTING WIRES, PIPES,  
OR STRUCTURE. IF YOU FEEL EXTRA RESISTANCE AS YOU ARE  
CUTTING, STOP.  
NOTE: DO NOT carry ThE spEakEr by ThE  
TwEETEr Or TwEETEr briDgE. This may DamagE  
ThE spEakEr.  
NOTE: DO NOT iNsTall lOuDspEakErs bEfOrE ThE Drywall has bEEN cOmplETEly  
fiNishED aND paiNTED.  
Figure 4. Installing a  
CM7SD loudspeaker.  
Mounting clamps require  
1” clearance to the sides  
of the hole opening  
(cONTiNuED ON NExT pagE)  
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PAINTING ThE GRILLES  
SPECIFICATIONS  
Tweeter /  
midrange amplifier power  
recommended  
Normal  
impedance  
frame Dimensions hole cut-Out  
Depth (5/8”  
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.  
model  
woofer  
with grille  
Dimensions Drywall ceiling)  
Mineral Filled  
Polypropylene  
woofer cone  
3/4” Soft  
10-100 watts  
Dome  
8 ohm nominal;  
6 ohm minimum  
8-3/4”  
(22.2 cm)  
2-1/8”  
(5.4 cm)  
9-7/8” (25.1 cm)  
CM7SD  
NOTES  
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.  
APPLICATIONS  
The Niles CM7SD Loudspeakers are designed to be installed in any standard  
ceiling. When choosing a location, thought should be given to the sound  
coverage of the loudspeaker, and ease of running the speaker wire. The shallow  
mounting depth of the CM7SD allows it to be mounted in a space that is only  
2.75” deep.  
STEREO SOUNd APPLICATIONS  
The best stereo effect will be achieved if both  
loudspeakers are at an equal distance from the  
listening area. Ideally all loudspeakers should  
8'  
be on the same horizontal plane (Figure 6). Avoid  
installing loudspeakers near corners to prevent  
3-6'  
a “boomy” or diffracted sound. Also note that  
the lower the ceiling, the closer the loudspeaker  
should be placed to the listener.  
8'  
Figure 6. Stereo Sound Application.  
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NOTES  
BY PHONE (IN USA)  
1-800-BUY-HIFI (289-4434)  
BY PHONE (OUtSIdE USA)  
1-760-710-0992  
CUStOmEr SErvICE HOUrS  
8:00 AM to 5:30 PM PT  
tECHNICAl SUPPOrt HOUrS  
6:00 AM to 4:00 PM PT  
ON tHE wEB  
www.nilesaudio.com  
EmAIl tECHNICAl SUPPOrt  
EmAIl fOr PrOdUCt SUggEStIONS  
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