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The use of Sima Multi Zone Speaker Selectors (or switchers): If your Stereo or Audio Video Amplifier / Receiver does not have multi zone capability and you connect more than one pair of speakers, the impedance (ohms) may drop to a dangerously low level causing circuitry damage or shutdown. Sima Impedance Matching Selectors will help you avoid this potential nightmare. Switch on the Impedance protection and it will cause the source to operate as if there were only one pair of speakers connected.
Sima Speaker Selectors with Volume Control let you add from four to six speaker pairs around your house with individual volume controls for each speaker. The plug-in screw terminals accept up to 14 gauge wire. Unique circuitry protects your amplifier, receiver and speakers from excessive power overloads. Some models support 2 amplifiers. Installation is also a snap. It is a 4 wire input (left -+ and Right +-), you wire from the output on your stereo receiver or amp to the 4 wire input on the switcher. Then from there you will find multiple outputs going out to separate zones, which can be turned off or on with the push of a button.
If your amplifier or receiver does not have multiple zone capabilities, and you do not plan on installing volume controls in all your zones, then this is definitely the proper route to travel; an invaluable but an inexpensive tool to turn a simple stereo system into a whole house audio system.
? Full impedance protection to protect your amplifier from low impedance
when multiple speaker pairs are selected
? Solid metal construction
Purchase at the GIN Electronics Custom Install Store