Niles CM8SW Installation & Operation Manual
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Niles CM8SW Installation & Operation Manual

Ceiling mount subwoofer
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I N S T A L L A T I O N
&
O P E R A T I O N
G U I D E
I N S T A L L A T I O N & O P E R A T I O N G U I D E
SW
CM 8
SUBWOOFER
®
B
H
F
L E N D I N G
I G H
I D E L I T Y
A
®
A N D
R C H I T E C T U R E

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  • Page 1 I N S T A L L A T I O N & O P E R A T I O N G U I D E I N S T A L L A T I O N & O P E R A T I O N G U I D E CM 8 SUBWOOFER ®...

  • Page 2: Table Of Contents

    Congratulations! Thank you for choosing a Niles ceiling mount loudspeaker. With proper installation and operation, you'll enjoy years of trouble-free use. The CM8SW is a ceiling mount subwoofer uniquely designed to provide unobtrusive low frequency augmentation. The selectable high and low-pass filters make it suitable for use with a wide variety of satellite speakers.

  • Page 3: Features And Benefits

    Features and Benefits TCC Speaker Cone The Niles CM8SW is a high-performance passive subwoofer that compliments the entire Niles ceiling mount loudspeaker line. It’s dual voice-coil injection molded TCC (talc, carbon and ceramic) woofer provides outstanding bass response The illustration below shows how a typical Niles CM loudspeaker mounts into a ceiling.
  • Page 4 Simply cut a hole in the mounting surface, remove the grille from the subwoofer, connect the wires and place the speaker in the hole. Then tighten the four mount- ing “dogs” via the front panel screws. The dogs first swivel 90°, then clamp the frame...

  • Page 5: How Many Subwoofers

    Perceived as twice as much loud- ness if it is an increase (half as much if it is a decrease). Any speaker requires twice as much amplifier power to increase 3dB and ten times as much power to increase 10dB.

  • Page 6: Connections

    Connections Single Stereo Subwoofer A four conductor (Left+, Left-, Right+ and Right-) wire 16 gauge or larger (see side- bar on speaker wire gauge) is run from the amplifier location to the local volume control (See Figure 4). Left CM8SW...
  • Page 7 In some areas conduit is required. For a trouble-free installation, low voltage wire such as speaker wire must be run in accor- dance with the National Electrical Code and any applicable provisions of the local building code.

  • Page 8: Impedance

    2 Subs @8Ω each 4Ω 2 Subs @4Ω each 2.6Ω If the impedance is too low for your ampli- fier utilize a Niles speaker selector or IM volume control to match the impedance. VLSA (Four or More Subwoofers) A VLSA (Very Large Subwoofer Array)
  • Page 9 Niles HDL series speaker selectors have a rear panel con- stant protection feature. (See Figure 8). The benefit of a speaker selector is that even with the protection circuit constant- ly engaged, more power will be delivered to any single pair of speakers playing by itself (all other speakers off).

  • Page 10: Treatment & Placement

    Insulation Lay a batten of fiberglass insulation (e.g. R-19 un-batted insulation) on top of the speaker. If you have more than one sub- woofer in the room, place the same amount of insulation above each subwoofer. If your enclosure is smaller than the recommended 1900 cubic inches, try packing more insula- tion into the space above the speaker.

  • Page 11: Installation Fundamentals

    The basic rules are: • Never run speaker wire through the same hole as an electrical cable. • Never run speaker wire into the same J-box as electrical cable. • Avoid running the speaker wire beside the electrical cable. Keep it at least three or four feet away from any electrical power cable.
  • Page 12 Pull the cable in sections (from the stereo to the volume control, from the volume con- trol to the speaker). Start with the longest sections and use left over wire to complete the short sections. If you plan to pull many...
  • Page 13 Doorjambs can be removed and often have enough space for speaker wire all the way around the door (See Figure 13). Sometimes, an under-the-carpet run is pos- Unobstructed...
  • Page 14 Nail plates are installed to protect the wire and the door jamb is replaced. Ceiling Joist Stud Plate Diagram of ceiling speaker cut-out with ceiling joists notched for wire run. Nail plate Nail plate Wall...

  • Page 15: Installation In New Construction

    The wings can be shortened by Figure 15 The optional hole saving brackets are installed and the speaker wire is attached to the bracket. breaking them along the scored lines if their length will interfere with a corner or eaves.

  • Page 16: Installationin Existing Construction

    1. When determining the location of the speaker cutout keep in mind that the mounting dogs will extend 3/4” beyond the cutout. Make sure that you do not place the edge of the cutout directly next to a ceiling joist.

  • Page 17: Final Installation In New Or Existing Construction

    Remember to use equal amounts of insulation for each speaker. 2. Separate the speaker wire so that at least two inches of each conductor are free. 3. Open the no-strip terminal by applying pressure to the red and black levers until an audible “click”...
  • Page 18 Remove the outside portion of the template by gently pulling along the perforation. Affix the mask to the front of the speaker by friction-fitting the mask into the bezel. The grilles should be painted before they are installed. For all models, the best...

  • Page 19: Operation

    Cleaning You can clean the speaker with a dampened soft cloth or paper towel. If the speaker is mounted high up on the ceiling, use a broom to gently brush it off.

  • Page 20: Specifications

    90 dB for 2.83 volts of pink noise, measured at 1 meter on axis Overall Exterior Frame Dimensions 10-5/8" diameter Depth Behind Wall 4" (based on 1/2" drywall) Wall Cut-Out Dimensions 9-1/2" diameter Connections Dual patented two-piece, no-strip speaker wire terminal, accommodates.12-18 gauge...
  • Page 21 WA R R A N T Y R E G I S T R AT I O N CA R D Model Purchased__________________ ____________ _ ____ Serial Number_____________ ____________________ _ __________________________________________________ Date Purchased (month/day/year)_______ _____________________ _ ____ ___________________________ ______ Dealer Name and Location________________ _____ ___________________________________________________ ___________________________________________ _________ ______________________________________________ K Dr.

  • Page 22: Warranty Registration Card

    PLEASE FILL OUT THE WARRANTY REGISTRATION CARD ON THE REVERSE SIDE, DETACH, AND MAIL TO: Niles Audio Corporation Warranty Registration Dept. P.O. Box 160818 Miami, Florida 33116-0818 ®...

  • Page 23: Limited Warranty

    Limited Warranty Niles Audio Corporation ("NILES") warrants its loudspeaker products to the original purchaser to be free of manufacturing defects in material and workmanship for a period of five years from date of purchase. This Warranty is subject to the following additional conditions and limitations. The Warranty...
  • Page 24 Corporation 12331 S.W. 130 Street Miami, Florida 33186 © 2004 Niles Audio Corporation. All Rights Reserved. Niles, the Niles logo, and Blending High Fidelity and Architecture are registered trademarks of Niles Audio Corporation. Tel: (305) 238-4373 MicroPerf is a trademark of Niles Audio Corporation. All other trademarks are the property Fax: (305) 238-0185 of their respective owners.

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