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The use of Dual Source Multi Zone Speaker Selectors: 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. Multi Zone Impedance Matching Speaker Selectors will help you avoid this potential nightmare. Impedance protection will cause the source to operate as if there were only one pair of speakers connected.
With a Dual Source Speaker Selector (or Switcher) , you choose from 2 Audio Sources that can play simultaneously in different zones. Hence, for each zone you will have on/off capability, as well as A/B Source capability. This gives one a flexible Home Audio Stereo System without spending the thousands of dollars you can pay for Multi Zone Audio Distribution Amplifier and Keypad Systems.
Selectors usually come in models that will handle anywhere from from 4 to 12 stereo zones of speakers. 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 new unit. 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 correct route to take, an invaluable, but inexpensive manner in which to create a whole house audio distribution system.
Purchase at the GIN Electronics Custom Install Store