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INSTALLATION CONSIDERATIONS (CONTINUED)
USING SPEAKER SELECTORS WITH IM VOLUME CONTROLS
Although IM controls provide volume and on/off at the volume-control location, they do not give you central control of speak-
ers playing throughout the house.
Speaker-selection systems give you central control, but some speaker selectors have non-defeatable impedance-protection
circuits. Combining IM controls with such a selector will reduce your maximum volume substantially. To solve this problem,
specify a speaker selector with a defeatable protection circuit (Niles models HPS4, HPS6, SS-4, or SS-6). Keep the protection
circuit off at all times.
JUNCTION BOXES
The mounting depth of the MVC 100 is 2-9/16". When installed, the unit extends 2-1/16" behind the sheetrock wall
(assuming 1/2" sheetrock). For installation, use a standard 18-cubic-inch (or larger) junction box. Suitable junction boxes
are available from your Niles dealer or local electrical-supply company.
TYPE OF SPEAKER WIRE
We recommend 16-gauge stranded copper speaker wire for most connections, and 14-gauge wire for runs longer than 80
feet. Don’t use speaker wire larger than 14 gauge, because larger wire may not fit into the connectors. Never use solid-core,
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