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• At the installation sites, locate and make a note of all fuel lines, hydraulic brake lines, vacuum lines and electrical wiring. Use extreme caution when cutting or drilling in and around these areas. • Choose a safe mounting location away from moisture. • Make sure there is sufficient air circulation at the mounting location for the amplifier to cool itself. • Mount the amplifier, using the supplied hardware. Specifications • 225W RMS x 1 channel @ 4 ohms and <1% THD + N* • 360W RMS x 1 channel @ 2 ohms, 14.4V supply and <1% THD + N* • Frequency response: 20Hz – 330Hz (–3dB) • Maximum input signal: 6V* • Maximum sensitivity: 100mV* • THD + N: 0.04% • Signal-to-noise ratio: 85dBA (reference 1W into 4 ohms)* • Signal-to-noise ratio: 104dBA (reference rated power into 4 ohms) * CEA-2006A-compliant Speaker Output Connectors • Connect the subwoofer to these terminals, observing proper polarity. Either + or – terminal may be used. Minimum total impedance is 2 ohms. Fuses • Replace only with the same type and rating. Power Input Connectors • +12V: Connect to the positive terminal of the vehicle’s battery. 8 AWG wire is recommended. Install an appropriate fuse holder and fuse (60A minimum) within 18 inches of the battery. Make sure the wire is not damaged or pinched during installation. Install protective grommets when routing wires through the firewall or other sheet metal. • GND: Connect to the vehicle’s chassis. Refer to the picture below. Factory Bolt Ring Connector Ground Wire Star Washer Note: Remove any paint below ring connector. • REM: Connect to the “Remote Out” lead from the source unit or to a source of switched 12V+ (ACC). Aux Output Connectors (RCA) • Nonfiltered pass-through output. Connect to the input of an additional amplifier. Input Connectors (RCA) • Connect to the RCA outputs from the source unit or signal processor. Input-Level Control • Used to match the input level of the amplifier to the output level of the source unit. • See for the adjustment procedure. Low-Pass Filter Frequency Control • 12dB/octave low-pass filter, variable from 32Hz to 320Hz. • See for the adjustment procedure. DBO (Dynamic Bass Optimization) Variable Subsonic High-Pass Filter With Variable Boost (Q) • For woofers in tuned (vented) enclosures, set the Frequency control to a value 10Hz below the enclosure’s resonance (tuned) frequency. • For woofers in sealed boxes, set the control to any value you prefer between 30Hz and 50Hz. • Set the Boost control according to your preference, being careful not to apply enough boost to damage your woofer(s). ADBO High-Pass Filter Frequency control, variable between 10Hz and 100Hz. See above for appropriate settings. BDBO Boost control provides up to 12dB of boost slightly above the high- pass filter’s frequency. See above for appropriate settings. Optional Remote Level Control (RLC) Connector • Connect the Remote Level Control (RLC) here, using the RJ-11 cable (Supplied with the RLC). Power On LED • Illuminated when the amplifier is on. Protect LED • Illuminated under any of the following fault conditions: battery over/under voltage, short circuit in speaker wires, amplifier is too hot, amplifier’s output circuit has failed (DC voltage is present in the amplifier’s output). Setting Input Level ATurn Input Level control counterclockwise to 6V (minimim). BWith a dynamic music track playing, turn the head unit’s volume control to the 3/4 position. CTurn Input Level control clockwise until the bass output is proportionate to the output of the high-frequency speakers, according to your preference. DInput level is now adjusted correctly. Setting the Crossover ACrossover setting for subwoofers. Note: Acceptable frequency ranges are indicated in gray. Remote Level Control (Optional) The Remote Level Control, if installed, will allow you to adjust the level of bass while seated in the listening position. This product is designed for mobile applications and is not intended for connection to the mains. A valid serial number is required for warranty coverage. Features, specifications and appearance are subject to change without notice. Declaration of Conformity Harman International, Consumer Division 8500 Balboa Boulevard, Northridge, CA 91329 USA © 2009 Harman International Industries, Incorporated. All rights reserved. JBL is a trademark of Harman International Industries, Incorporated, registered in the United States and/or other countries. Part No. GTO3501OM 3/08 We, Harman Consumer Group, Inc. 2, route de Tours 72500 Chateau du Loir France declare in own responsibility that the product described in this owner’smanual is in compliance with technical standards: EN 55013:2001+A1:2003 EN 55020:2002+A1:2003 Klaus Lebherz Harman Consumer Group, Inc. Chateau du Loir, France 3/08 ...