Description
JL Audio RD900/5 5-Ch. Class D Amplifier
Summary
5-channel car amplifier
75 watts RMS x 4 + 225 watts RMS x 1 at 4 ohms
100 watts RMS x 4 + 500 watts RMS at 2 ohms
200 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode) + 500 watts RMS at 2 ohms
Class D amplifier design with NextD™ switching amp technology
Differential-balanced inputs help eliminate noise
Variable high-pass filters (50-500 Hz, 12 dB/octave) on front and rear channels
Variable low-pass filter (50-500 Hz, 12 dB/octave) on subwoofer channel
LED clip lights help set gain
Overview
Crafted as an all-in-one, total system solution, the RD900/5 is engineered to power a complete audio system consisting of a subwoofer + four satellite system with 900 watts of high-performance sound. Equipped with our exclusive NexD™ switching technology, this complete power package efficiently generates a potent 70 watts of crystal-clear audio into 4 ohms, plus a robust 500 watts for a subwoofer system, all from a single compact chassis. Each pair of main channels is also fully bridgeable, stoutly producing 200 watts of full-range audio bliss (into 4 ohms), creating an ultra-powerful 3-channel amplifier.
Conveniently located on top of the RD900/5, you’ll find a complement of studio-grade signal processing features, all hidden beneath a removable protective cover. Each pair of main channels is equipped with a 12 dB / octave high-pass filter, with a dedicated low-pass filter for its subwoofer channel. All three crossovers offer continuously variable frequency selection from 50-500 Hz, for precise filtering. Dual-range, differential-balanced inputs are also onboard, capable of accepting most input voltage levels, plus automatic turn-on capability (via signal sensing or DC-offset sensing) for maximum versatility.
LED clipping indicators are also standard equipment for each channel section. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity settings, quickly and accurately, with no special equipment needed. The RD900/5 features a durable, black powder-coated finish and a top-mounted, dual-color LED light strip that reports the overall status and condition. With the addition of an RBC-1 remote level control (sold separately), you can conveniently control the subwoofer’s output remotely from the driver’s seat.
Rated Continuous (RMS) Power @ 14.4 V
| Main Channels @ 4 Ω |
70 W RMS x 4 |
| Main Channels @ 2 Ω |
100 W RMS x 4 |
| Main Channels – Bridged @ 4Ω |
200 W RMS x 2 |
| Subwoofer Channel @ 4 Ω |
225 W RMS x 1 |
| Subwoofer Channel @ 3 Ω |
325 W RMS x 1 |
| Subwoofer Channel @ 2 Ω |
500 W RMS x 1 |
| Subwoofer Channel @ 1.5 Ω |
N/A |
Rated Continuous (RMS) Power @ 12.5 V
| Main Channels @ 4 Ω |
60 W RMS x 4 |
| Main Channels @ 2 Ω |
90 W RMS x 4 |
| Main Channels – Bridged @ 4Ω |
180 W RMS x 2 |
| Subwoofer Channel @ 4 Ω |
200 W RMS x 1 |
| Subwoofer Channel @ 3 Ω |
250 W RMS x 1 |
| Subwoofer Channel @ 2 Ω |
350 W RMS x 1 |
| Subwoofer Channel @ 1.5 Ω |
N/A |
General Specifications
| Frequency Response (Main Channels) |
12 Hz – 22 kHz (+0, -1dB) |
| Frequency Response (Subwoofer Channel) |
10 Hz – 500 Hz (+0, -1dB) |
| S/N Ratio, referred to highest rated power (Main Channels) |
>104 dB below rated power (A-weighted, 20 Hz – 20 kHz noise bandwidth) |
| S/N Ratio, referred to 1 W |
>84 dB (A-weighted, 20 Hz – 20 kHz noise bandwidth) |
| Damping Factor @ 4 Ω |
>150 / 50 Hz |
| Damping Factor @ 2 Ω |
>75 / 50 Hz |
| THD+N @ Rated Power (Main Channels) |
<1% @ 2 Ω per Ch. |
| THD+N @ Rated Power (Subwoofer Channels) |
<1% @ 2 Ω per Ch. |
| 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 |
80 A (AFS, AGU or MaxiFuse™) |
Signal Processing
| Filter Mode(s): Channels 1 & 2 (front) |
High-Pass only |
| Filter Slope(s): Channels 1 & 2 (front) |
12 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 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 dB/octave |
| Filter Frequency Range: Subwoofer Channel |
50 Hz – 500 Hz |
| Detented, Calibrated Filter Freq. Potentiometers |
No |
| Filter Defeat Function |
No |
| Infrasonic Filter: Subwoofer Channel |
No |
| Remote Level Control |
Optional (RBC-1) |
| Remote Level Modes |
Sub Ch. |
| Channel Input Mode Switch |
Yes (2/4/6 ch.) |
| Pass-Through Preamp Output |
No |
| Source Channel Selection for PreOuts |
N/A |
Physical Specifications
| Height (H) |
2.13 in / 54 mm |
| Width (W) |
14.66 in / 372 mm |
| Depth (D) |
6.96 in / 177 mm |
| Net Weight |
6.15 lb / 2.79 kg |
