JL AUDIO (HD900/5) 5-CHANNEL CLASS-D SYSTEM AMPLIFIER. 100W X 4 @ 4 OHMS / 75W X 4 @ 1.5-3 OHMS (MAIN CHANNELS) 500W X 1 @ 1.5-4 OHMS (SUBWOOFER CHANNEL) OVERVIEW: 5-Channel Class D System Amplifier, 100 W x 4 + 500 W x 1 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 our Single Cycle Control switching design and R.I.P.S. technology, the HD900/5 delivers 100 W x 4 to its four main channels, plus a very meaty 500 W 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. RATED CONTINUOUS (RMS) POWER @ 14.4 V 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 RATED CONTINUOUS (RMS) POWER @ 12.5 V 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 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) :
