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Controls automatic turn-on circuit. Powers unit on with signal; reverts to standby after inactivity.
Indicates unit status: green for signal presence, red for standby mode.
Inputs for receivers without line-level outputs, connects to speaker outputs.
Standard inputs for receivers with pre-amp or subwoofer out jacks. Y-cable needed for mono.
Adjusts the upper corner roll-off point for the subwoofer's frequency response.
Switches signal polarity between normal and reverse for optimal bass integration.
Controls the overall volume level of the subwoofer.
Connects AC line voltage to the BU2. Present on 230v version only.
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