HD900/5
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 ( RMS ) Power @ 11,50 – 14,40 Volt
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 |
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™) |
Filter Mode(s): Channels 1 & 2 (front) | High-Pass only |
Filter Slope(s): Channels 1 & 2 (front) | 12/24 dB/octave |
Filter Frequency Range: Channels 1 & 2 (front) | 50 Hz – 500 Hz |
Filter Mode(s): Channels 3 & 4 (rear) | High-Pass only |
Filter Slope(s): Channels 3 & 4 (rear) | 12/24 dB/octave |
Filter Frequency Range: Channels 3 & 4 | 50 Hz – 500 Hz |
Filter Mode(s): Subwoofer Channel | Low-Pass only |
Filter Slope(s): Subwoofer Channel | 12/24 dB/octave |
Filter Frequency Range: Subwoofer Channel | 50 Hz – 500 Hz |
Detented, Calibrated Filter Freq. Potentiometers | Yes |
Filter Defeat Function | Yes |
Infrasonic Filter: Subwoofer Channel | 30 Hz, Defeatable |
Remote Level Control | Optional (HD-RLC) |
Remote Level Modes | Sub Ch. only |
Channel Input Mode Switch | Yes (2/4/6 ch.) |
Pass-Through Preamp Output | None |
Source Channel Selection for PreOuts | N/A |
Height (H) | 1.93 in / 49 mm |
Width (W) | 10.74 in / 273 mm |
Depth (D) | 8.29 in / 211 mm |
Net Weight | 6.85 lb / 3.11 kg |