12 Pair Impedance Matching Speaker Selector ( PRO-12 HP ) – Russound The PRO-12HP is a robust, efficient dual-source speaker selector for up to 12 pairs of speakers. Designed for demanding applications, this high-quality speaker selector features a low-frequency protection circuit to reduce subsonic signals. This allows higher power operation without amplifier shutdown. An A/B switch on the front panel allows you to power all your speakers with either of two source amplifiers. The PRO-12HP is designed for use with either 4- or 8-ohm speakers. The PRO-12HP uses audiophile-grade autoformers for impedance matching to maintain a safe operating load at the amplifier while distributing maximum power throughout your system. A rotary switch on the rear panel sets the appropriate impedance for your amplifier, based on the number of speaker pairs connected. Special Features Lets you control speakers in several rooms from a central location Printed room labels included Detachable snap connectors are color coded for easy wire termination Selectable impedance matching accommodates 4- or 8-ohm speakers Low-frequency protection circuit helps to guard your amplifier Audiophile-quality autoformers provide high performance for years Specifications Shipping Dimensions: 20.3″ (W) x 6.2″ (H) x 12.2″ (D), (51.4 x 15.6 x 30.9 cm) Shipping Weight: 9.9 lbs (4.5 kg) Connector(s): Detachable 4-pole color-coded snap connectors Impedance Matching Type: Autoformer Low Frequency Protection: Bipolar capacitor circuit, 6 dB high-pass filter, centered at 30 Hz20 Hz – 20 kHz +/- 0 dB Max Wire Size: 14 AWG (1.9 mm) Min Trigger Level: 15 mV Power Handling: 100 watts RMS continuous per channel, 300 watts peak per channel Speaker Impedance: 4 ohms
