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General| Number of Channels | 1 |
|---|---|
| Input Sensitivity | 200 mV - 4 V |
| Power Output (RMS) | 1200 Watts x 1 @ 1.5 ohms |
| THD at Rated Power | < 0.05% |
| Low Pass Filter | 50 Hz - 200 Hz |
| Damping Factor | >500 |
Expresses gratitude for purchasing the JL Audio amplifier and highlights its design for musical enjoyment.
Warns about potential hearing damage from high sound pressure levels and advises safe operating practices.
Instructs users to record the product's serial number for service or theft records.
Specifies the amplifier's design for 12V systems, prohibits aircraft use, and emphasizes careful installation planning.
Explains the RealSink™ heat management and recommends proper ventilation for optimal performance.
Advises on dry, ventilated installation, securing the unit, and avoiding interference with vehicle safety systems.
Lists critical installation errors like drilling into vital systems, running wires externally, and improper mounting locations.
Details the amplifier's Class D technology, wide-range design, R.I.P.S. power supply, and flexible input/crossover section.
Provides a 15-step guide for installing the amplifier, covering wire connections, mounting, and initial setup.
Details battery connection and specifies recommended wire gauges (4 AWG, 2 AWG, 1/0 AWG) and their lengths.
Explains the vital role of fuses, recommended values (100A), and types (MaxiFuse™, ANL) for protection.
Guides on making a short, solid chassis ground connection using 4 AWG wire and proper hardware.
Explains connecting the remote turn-on wire and power/ground wires to the amplifier's connector plug.
Describes two mounting methods: standard corner mounting and lateral mounting feet.
Explains the function of the security cover to prevent accidental setting changes and how to remove/reinstall it.
Details the stereo RCA inputs and the requirement to use both for mono operation, or an RCA Y-adaptor.
Introduces the Input Voltage switch and Input Sensitivity rotary control for matching the amplifier to the source unit.
Guides on adjusting the Input Sens. control for maximum clean output, referencing Appendix C.
Introduces the crossover concept and the HD1200/1's filter capabilities, including modes.
Describes filter slopes (12dB/24dB) and how to select cutoff frequency for smooth sound.
Details the 30 Hz infrasonic filter for conserving power and protecting subwoofers from subsonic frequencies.
Explains the 0°/180° switch for reversing subwoofer polarity to optimize mid-bass transition.
Describes the pass-through preamp outputs for connecting additional amplifiers without affecting crossover or sensitivity settings.
Details the optional HD-RLC for remote volume control, especially useful for subwoofers.
Explains the R.I.P.S. design, speaker impedance compatibility (1.5-4Ω), and protection circuitry for low impedance loads.
Warns against loads below 1.5Ω to prevent distortion and trigger protection circuitry.
Details how to connect speaker wires using the connector plugs, including parallel connection for multiple speakers.
Explains the multi-color LED indicators (Green, Red, Amber) for normal operation, overheating, and impedance/short-circuit protection.
Describes the alternating Red/Green LED for faults and low voltage conditions, and automatic shutdown/restart behavior.
Advises returning the amplifier to an authorized dealer for service, as there are no user-serviceable parts.
Lists amplifier type, topology, power supply, rated power, THD, S/N, frequency response, and damping factor.
Covers crossover filter types, modes, frequencies, input types, preamp outputs, and chassis dimensions.
A chart correlating detent numbers with specific frequency settings for the filter.
Explains how to set input sensitivity for predictable, unclipped output using a voltmeter and test tone.
A step-by-step guide to setting input sensitivity using a voltmeter and test tone.
A table providing target voltages for input sensitivity adjustment based on speaker impedance.
Refers to Appendix C for proper input sensitivity setup to avoid distortion.
Guides on checking fuses, connections, remote voltage, shorts, and resetting the amplifier.
Addresses voltage drops, grounding issues, and potential charging system problems causing shutdowns.
Guides on checking input signal, amplifier output voltage, and speaker connections for no-output conditions.
Provides space to document amplifier switch and control positions for reference.
Outlines the terms, duration, coverage, and exclusions of the product warranty.
Provides instructions for warranty returns and contact details for JL Audio Customer Service.
Clarifies that products purchased outside the US are covered by country distributors, not JL Audio Inc.
