About: JL Audio HD750/1 HD Series 750W RMS Monoblock Amplifier

This ultra-compact monoblock amplifier employs our Single-Cycle Control switching design and R.I.P.S. technology to deliver 750 W of clean power into any impedance between 1.5 and 4 Ω, giving you the highest degree of flexibility in designing your subwoofer system. Tight power supply regulation keeps distortion down and maximizes your bass quality. From a pure sound quality perspective, we invite you to compare the real-world, in-car performance of this amplifier to any other amplifier on the market, of any type, at any price.

While targeted primarily to subwoofer applications, the HD750/1 is a wide-range amplifier and can also be used to drive high-performance mid-range speaker systems.This amplifier features a brushed aluminum finish with black powder-coated cast alloy heat sinks and bottom panel. A black powder-coated, gasketed cover is also provided to protect the controls.

Features: 

• Mono subwoofer amplifier
• Variable high- and low-pass filter (50-500 Hz 12 or 24dB/octave)
• Subsonic filter and output polarity control
• Removable power and speaker plugs
• Optional wired remote for level control
• Optional HD stacking kit for stacking multiple HD amps together
• Class D amplifier design
• MOSFET power and output stages
• Differential-balanced inputs eliminate noise from your vehicle's electrical system
• Speaker- and preamp-level inputs (speaker-level input requires an optional adapter)
• Preamp outputs
• No onboard fuses — when installing multiple amps in a system, an additional 60-amp in-line fuse between the distribution block and the amplifier is recommended
• Dimensions (W x H x D): 10.74" x 1.93" x 7.85" (273 x 49 x 199 mm) 
• Weight: 6.6 lb (2.99 kg) 

Specifications: 

• Rated Continuous (RMS) Power @ 14.4 V
• @ 4 Ω 750 W RMS x 1
• @ 3 Ω 750 W RMS x 1
• @ 2 Ω 750 W RMS x 1
• @ 1.5 Ω 750 W RMS x 1
• Rated Continuous (RMS) Power @ 12.5 V
• @ 4 Ω 750 W RMS x 1
• @ 3 Ω 750 W RMS x 1
• @ 2 Ω 750 W RMS x 1
• @ 1.5 Ω 750 W RMS x 1
• Frequency Response 6 Hz - 8 kHz (+0, -1dB)
• S/N Ratio, referred to highest rated power >110 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
• S/N Ratio, referred to 1 W (Main Channels) >88 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
• Damping Factor @ 4 Ω >500 / 50 Hz
• Damping Factor @ 2 Ω >250 / 50 Hz
• THD+N @ Rated Power (Main Channels) <0.03% @ 4 Ω
• Input Voltage Range @ RCA Inputs Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High)
• Min.Copper Power / Ground Wire Gauge 4 AWG wire
• Fuse Rating 60 A (AFS, AGU or MaxiFuse™)