The Russound AB-3.2 removes the button from A/B switching. It connects one pair of speakers to two amplified sources and watches the alternate input: when program material appears there, it hands the speakers over automatically, and when that source falls silent for the set delay it switches back to the default amplifier.
That makes it a simple way to let a TV or local receiver take over room speakers that normally play the whole-house system, or to have a paging amplifier interrupt background audio in a lobby or waiting area. Sensitivity and delay (0 to 30 seconds) are adjustable, and power and status LEDs confirm operation during setup. All connections are on one face of the compact chassis, which fits many structured wiring panels, and detachable colour-coded snap connectors allow wiring before mounting. It is rated 200 watts per channel into 8 ohms (100 W into 4 ohms) and runs from the included 12 VDC power supply.
Key Features
- Automatic signal-sensing switching
- Adjustable sensitivity and 0-30 s delay
- Power and status LEDs
- Fits many structured wiring panels
- 12 VDC power supply included
Ideal Applications
TV rooms sharing speakers with a multi-room system, lobbies and waiting rooms with paging override, and small commercial spaces that need hands-free source priority.
Compatibility
Works with conventional stereo amplifiers and receivers and 4- or 8-ohm speakers; not for 70V lines. Connect the whole-house amplifier to the Amp A (default) input and the local receiver or TV source to Amp B (priority). Russound recommends placing the unit near the Amp B source and plugging the supply into a non-switched outlet. Requires the included 12 VDC 300 mA supply. Russound warranty: 2 years.