The most important and most forgotten about subject in getting reliable and high quality distributed audio is arguably impedance matching...Forget these fundamentals and you will open up a host of issues!
The PRO-12HP is a robust, efficient dual-source speaker selector for up to eight 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.
Russound PRO-12HP - Impedance Matching Dual Source Twelve Pair Speaker Selector Features & Benefits:
Detachable snap connectors are color coded for easy wire termination
Selectable impedance matching accommodates 4 or 8-ohm speakers
Dual source capability with A/B amplified speaker inputs (with front toggle switch)
Low-frequency protection circuit helps to guard your amplifier
Audiophile-quality autoformers provide high performance for years
Power:100 watts per channel RMS continuous
Power:200 watts per channel average
Power:300 watts per channel peak
Impedance Matching: High-efficiency impedance-matching autoformers
Low-Frequency Protection: Bi-polar capacitor circuit
Wire Size: up to 12 gauge wire
Lets you control speakers in several rooms from a central location
Printed room labels included
Russound PRO-12HP - Impedance Matching Dual Source Twelve Pair Speaker Selector Specifications:
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 Hz
Max Wire Size: 14 AWG (1.9 mm)
Power Handling: 100 watts RMS continuous per channel & 300 watts peak per channel
Speaker Impedance: 4 ohms
Dimensions: 17” W x 2.875” H x 8.25” D (43.2 x 7.3 x 21 cm)
Weight: 7.75 lbs. (3.49 kg)