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Niles manufactures the industry’s most complete line of custom installation components and accessories for audio/video systems. To see the complete Niles product assortment, visit us on the Internet at: PACKAGE CONTENTS Each package contains a CM850Si loudspeaker; 1 Aluminum MicroPerf™ Grille and 1 cardboard paint mask/hole cutout template. INSTALLATION CONSIDERATIONS We recommend using the following tools and material to install your Niles CM loudspeaker: Before starting the installation, please observe the following precautions: RUNNING WIRES IN WALLS OR CEILINGS When running loudspeaker wire inside walls or ceilings, use special jacketed cable (a minimum of 18 to 16-gauge two-conductor CL-2 or CL-3 rated loudspeaker wire) to protect the wire and for fire prevention. In some areas, conduit is also required. For a trouble-free installation, low-voltage wire such as loudspeaker wire must be run 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. SELECTING THE LOCATION FOR YOUR LOUDSPEAKERS The CM850Si loudspeaker is designed to be installed in any standard ceiling. There are two considerations for placing the loudspeaker; ease of running the cable to the loudspeaker and coverage of the loudspeaker. The best stereo effect will be achieved if the loudspeaker is placed in the center of the listening area. Avoid installing the loudspeaker near a corner to prevent a “boomy” or diffracted sound. The CM850Si loudspeaker will cover an area of a circle with a 16-foot diameter when mounted at an 8-foot height and pointed straight down. (See Figure 1) EXISTING CONSTRUCTION INSTALLATION IMPORTANT: BEFORE YOU CUT INTO ANY WALL, REVIEW THE PRIOR SECTION ON LOUDSPEAKER PLACEMENT WHEN SELECTING THE LOCATION FOR YOUR LOUDSPEAKERS. 1. When determining the location of the loudspeaker 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. Locate the joists using a stud sensor or by hand knocking. Use the supplied cutout template (remove the largest perforated circle and use cardboard square with hole as the template) to determine how large of a hole you will need to cut. These templates are packed with your loudspeakers between the styrofoam packing and the ends of the box. 2. Once you have determined a possible position for the 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. • Cordless drill with 1/4 – and 1/2- inch drill bits and a 1-inch paddle drill bit (for drilling through studs) • Stiff wire, fish tape or glow rods for routing cables • Rubber gloves and protective eyewear • Keyhole or drywall saw • Phillips screwdriver set • Wire stripper • Stud finder • Cable ties • Pencil • Turn off all system power before making any connections • Always wear protective eyewear when using tools • Make sure hands are clean before installation • Wear gloves when working with fiberglass insulation 3. 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 4-3/8” of depth. If the wire’s movement is obstructed by anything, fill the hole(s) with spackle and try another location. 4. If the coat hanger moves freely in a complete circle and you have sufficient depth, hold the template up to the ceiling surface. The cardboard square with the circular hole is the template. The inner perforated circle within the larger circle that was removed in step 1 earlier is the paint mask. Keep it for painting the loudspeaker later. Outline the circular cutout on the ceiling surface lightly with a pencil. 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. NEW CONSTRUCTION INSTALLATION INSULATING THE WALL CAVITY If feasible, fill the wall cavity with insulation at this point. MOUNTING THE NEW CONSTRUCTION BRACKET The optional CM800 BKT can be used with the CM850Si loudspeaker. The hole saving bracket enables a faster and cleaner final install...