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HD-Series 5-Channel Class-D System Amplifier, 100-Watts x 4ch + 500-Watts x 1ch @ 1.5-4-Ohms Thanks to its ability to act as a "one-box solution", the HD900/5 is ideal for installations where space is at a premium and sound quality is the paramount goal. While extremely compact, this amazing amplifier will comfortably drive a complete high-performance car audio system: that is, four satellite speaker systems and a subwoofer system... with a very serious 900 watts of power! Using JL's Single Cycle Control switching design and R.I.P.S. technology, the HD900/5 delivers 100W x 4 to its four main channels, plus a very meaty 500W to its subwoofer channel. Thanks to R.I.P.S., high power can be delivered over a wide range of load impedances, while the tight power supply regulation keeps distortion down, maximizing sound 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. 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. General Specifications Frequency Response (Main Channels) 12 Hz - 28 kHz (+0, -1dB) Frequency Response (Subwoofer Channel) 12 Hz - 10 kHz (+0, -1dB) S/N Ratio, referred to highest rated power (Main Channels) >108.5 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W (Main Channels) >88.2 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >400 / 50 Hz Damping Factor @ 2 Ω >200 / 50 Hz THD+N @ Rated Power (Main Channels) <0.03% @ 4 Ω THD+N @ Rated Power (Subwoofer Channel) <0.05% @ 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 Accepts up to 4 AWG wire Fuse Rating 60 A (AFS, AGU or MaxiFuse™) Main Channels @ 4 Ω 100 W RMS x 4 Main Channels @ 3 Ω 75 W RMS x 4 Main Channels @ 2 Ω 75 W RMS x 4 Main Channels @ 1.5 Ω 75 W RMS x 4 Main Channels - Bridged @ 8 Ω 200 W RMS x 2 Main Channels - Bridged @ 4 Ω 150 W RMS x 2 Subwoofer Channel @ 4 Ω 500 W RMS x 1 Subwoofer Channel @ 3 Ω 500 W RMS x 1 Subwoofer Channel @ 2 Ω 500 W RMS x 1 Subwoofer Channel @ 1.5 Ω 500 W RMS x 1 JL Audio HD900/5 Brochure

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