JL Audio RD900/5 5-Ch. Class D Amplifier

  • 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
  • $699.00


    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

    Table Style
    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