Main Advantages of InwallTech Speaker Selectors are:
Removable Speaker Connectors (No Extra Cost) --Easier Install and firmer connections
Heat Sink Covered Resistors (No Extra Cost)....other makers provide inadequate cooling --Higher (honest) Power Handling
Venting ABOVE and BELOW Resistors (No Extra Cost) -- Smarter design = Higher power handling and longer life

The SS4R is a resistor based, automatic impedanced matching speaker selector used for connecting 4 pairs of speakers while maintaining a safe impedance load for your receiver. Each pair of speakers can be turned on or off independently in any combination without concern for amplifier loading.

-Connect and safely control multiple speaker pairs.
-Automatic impedance matching protection circuitry engages without the need for user involvement.
-Individual room on/off pushbuttons
-Heavy-duty screw-type connectors are removable and accept up to 14 gauge wire
-Isolated left/right circuit grounds provide safe connections for amplifiers with floating grounds or bridged configurations
-High quality construction throughout provides excellent reliability, accurate noise-free switching and years of trouble free operation
-Rubber feet prevent scratching and keep selector in place during operation

Impedance Matching
Power Handling: 100 watts RMS per channel
Frequency Response: 20 Hz - 22,000 Hz (+0dB, -0dB)
Wire Size Acceptance: Up to 14 gauge wire
Dimensions: 1 7/8" x 11 1/2" x 7"

Maximum number of speaker connections:
4 pairs (4 ohm minimum)

Minimum Amplifier Impedance w/All Speakers Selected:
All 8 ohm speakers connected and engaged: 6 ohms
All 4 ohm speakers connected and engaged: 5 ohms