OSD Audio

VMS300 Impedance Matching 300W In-Wall Slider Style Home Theater Speaker Volume Control Switchable Decora Plates - OSD Audio - (White, Ivory, Almond)


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With a whole-house audio system, you’ll enjoy great sound in the rooms you choose, but one person may like to shake the roof off while the other likes it mellow. That's where volume controls come in very handy. OSD Audio’s wall-mounted volume controls are an affordable, easy way to control speaker volume independently in each zone. Whether you choose knob control or soft-touch sliders, OSD Audio offers convenience and style with colors to match any decor. More Features * Control volume from any room * Wall-mounted volume controller works with any audio/video system * Low distortion and ruler flat frequency response A Little about Volume Controls Not every installation will require an impedance-matching volume control but it's important to know when you need it. A basic multi-room system will typically have an amplifier/receiver, a speaker selector, 4 to 8 pairs of speakers, and volume controls. To protect the amp, the speaker selector has impedance matching that you can turn on or off (manually) depending whether you have impedance matching volume controls. More complex multi-room systems often have a volume control for each pair of speakers that is attached to the speaker selector. Impedance-matching volume controls provide more precise protection for the amplifier/receiver versus the protection built into the speaker selector. In fact, when adding impedance matching, you must turn off (disable) the protection in the speaker selector. Most impedance-matching volume controls feature three standard settings: 1/2x, 4x and 8x, while some add a 16-ohm setting like our VMS series. These settings correspond to a chart in the owner’s manual based upon the type of amplifier (4 or 8 ohm) and the number of 4 or 8 ohm speakers that you will be using in the multi-zone/room/speaker system.

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