JL Audio HD Series HD1200/1 1200W RMS, Monoblock Class D, HD Series Amplifier

Small amp, sturdy power
A JL Audio HD Series amplifier offers steady performance from an ultra-compact chassis. The HD1200/1 mono amplifier pushes up to 1,200 watts RMS to your sub, from a 2" tall chassis that's about the size of a sheet of computer paper. The regulated power supply allows this amp to deliver its rated power to a wide range of impedances (from 1.5 to 4 ohms), even when voltage levels drop during heavy use.

JL Audio technology goes to work for you
HD Series amplifiers reproduce your music with exceptional accuracy, so you'll hear a high-fidelity sound even under the most demanding conditions. JL Audio uses Single Cycle Control™ technology to eliminate the excessive signal distortion that's plagued Class D amplifiers in the past. Differential-balanced inputs eliminate noise before it hits the preamp stage, and allow you to connect the amp to just about any in-dash stereo. Translation? You'll hear clear, true, studio-quality audio, exactly what you expect from JL Audio.

Cool and convenient
This Class D amp uses less power, takes up less space, and generates less heat than traditional amp designs — you can even stack up HD Series amps to create a sweet-looking installation. With the optional wired remote you can control your HD amp's volume from the front seat. Removable power and speaker plugs make it easy to pop this amp out if you need the space in your cargo area.

Product Features:

• JL Audio HD Series Monoblock Class D Amplifier
• *RMS Power Rating (11V-14.5V):
• • 4 ohms: 1200 watts x 1 chan.
  • 3 ohms: 1200 watts x 1 chan.
  • 2 ohms: 1200 watts x 1 chan.
  • 1.5 ohms: 1200 watts x 1 chan.
• Class D, switching type with patented Single-Cycle Control technology
• Pulse width modulation-regulated switching power supply
• LED power (green), protect (red) and low impedance (amber) indicators
• Removable Power/Ground and Speaker connectors
• Brushed aluminum finish chassis
• Compact, stackable chassis design
• Black powder-coated, gasketed cover
• RealSink Vertical, cast alloy fins effectively dissipate heat
• Advanced Thermal Rollback protection system
• R.I.P.S. - Regulated, Intelligent Power Supply
• Single Cycle Control - high-fidelity, full-range Class D
• • Compares the real PWM waveform and then corrects it in each and every cycle 
    (over 400,000 times per second)
  • 80% efficiency at 1/2 rated power for the whole amplifier, including its power supply
  • 60% less current draw than a typical Class A/B car amplifier of equal power
  • Less generated heat, smaller chassis than a similarly powerful Class A/B design.
• Noise-killing, highly flexible differential-balanced inputs
• 1 Pair of Buffered preamp RCA outputs for daisy-chaining the audio signal
• Remote bass level input JL Audio HD-RLC required and sold separately)
• Selectable input voltage/sensitivity:
• • Low level: 200mV - 2V
  • High level: 800mV - 8V
• Selectable output polarity, "Phase": 0/180°
• Selectable State-variable slope: 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley
• Selectable infrasonic filter, "Subsonic": Defeatable or 30 Hz
• Selectable filter modes: Low-Pass or High-Pass, Defeatable
• Cutoff Freq. Range: Continuously variable: 50 - 500 Hz
• Total Harmonic Distortion: <0.03% @ 4Ω (Average at 1kHz)
• Signal to Noise Ration:
• • Referred to Rated Power: 111 dBA
  • Referred to 1 Watt: 82.2 dBA
• Frequency response: 6 - 8,000 Hz (+0, -1 dB)
• Damping Factor: >500 @ 4Ω/50 Hz, >250 @ 2Ω/50 Hz
• Recommended fuse rating: 100A x 1 (inline, not included)
• Dimensions: 10.74"L x 7.85"W x 1.93"H
• **4 gauge OFC power and ground wiring is recommended for installation.
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