SUB-TS18 SUBWOOFER AMPLIFIER PANEL CONTROLS AND CONNECTIONS 5SUB-TS18 SUBWOOFER AMPLIFIER PANEL CONTROLS AND CONNECTIONS¡ Subwoofer-Level Control: Volumemay be adjusted using the Subwoofer-Level Control. Turn the control clockwiseto increase the SUB-TS18’s volume, orcounterclockwise to decrease it.™ High-Cut (Low-Pass) Filter Switch:Placing this switch in the ON position acti-vates circuitry that cuts out all audio inputsignals above 120Hz, allowing the SUB-TS18to focus its power on reproducing the low-frequency portion of the signal, avoidinginefficiency and distortion. Engage this filterwhen using the Speaker-Level Inputs ª,or when using the Line-Level Full-RangeInputs ¶, unless your receiver or processorprocesses its line-level output using a low-pass filter. The filter has no effect when theSUB Input § is used.£ External Trigger Input: Use the sup-plied mini-plug cable to connect the triggeroutput of another product to this jack. Whena trigger signal between 3 and 30 volts (ACor DC) is detected, the SUB-TS18 amplifierwill turn on, even when the audio-sensefeature has been activated by placing theAudio-Sense On/Off Switch ¢ in theAUTO position. The amplifier will remainon for about 10–15 minutes without atrigger signal.¢ Audio-Sense On/Off Switch: Whenplaced in the AUTO position, and when theMaster Power Switch ‚ is turned on, theSUB-TS18 will automatically turn itself on or¡ Subwoofer-Level Control™ High-Cut (Low-Pass) Filter Switch£ External Trigger Input¢ Audio-Sense On/Off Switch∞ Phase Switch§ Line-Level Subwoofer (SUB) Input¶ Line-Level Full-Range Inputs• Speaker-Level Outputsª Speaker-Level Inputs‚ Master Power Switch⁄ AC Power Cord