RD-Series 5-Channel Automotive Amplifier, 70-Watts x 4ch + 500-Watt Mono @ 2-Ohm
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 JL's 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.
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
80 A (AFS, AGU or MaxiFuse™)
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
JL Audio RD900/5 Manual
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