JL Audio RD500/1 Monoblock Class D Subwoofer Amplifier, 500 W

Sleek and powerful, RD amplifiers offer outstanding amplifier performance and value.

RD amplifiers employ JL Audio’s exclusive NexD™ switching technologies to generate loads of power with exceptional efficiency, reducing current draw and heat. Each model features a modern, industrial design with a high performance look and finish. For ease of installation and making adjustments, all connections are placed along one side of the amplifier with the controls on top, concealed beneath a removable protective cover.

All RD models are equipped with studio-grade signal processing and automatic turn-on capabilities (via signal sensing and DC-offset sensing), for maximum flexibility. Differential-balanced inputs are also on-hand to combat noise and maximize compatibility with a wide range of signal types. Two additional features have been included to simplify installation and set-up: LED clipping indicators to streamline the input level setting process, and "Input Type" switches on the stereo channel sections, eliminating the need for Y-adaptors when bridging.

Monoblock Class D Subwoofer Amplifier, 500 W x 1 @ 2 Ω / 250 W x 1 @ 4 Ω - 14.4V

Born to produce a whopping 500 watts into 2 ohms (14.4V, 1% THD), the RD500/1 amplifier was engineered to generate tons of pure subwoofer bliss from a sleek, ultra-compact chassis. The secret behind its power proficiency is our proprietary NexD™ switching technology, which delivers large amounts of power output with precise efficiency and ultra-low distortion.

For your convenience, the RD500/1’s controls are located on top of the amplifier, beneath a protective cover, with all connections found along one side of its chassis. Signal processing features include a 12 dB / octave low-pass filter, with continuously variable frequency selection from 50-500 Hz, and a variable bass boost EQ. Dual-range, differential-balanced inputs are also on-hand, capable of accepting most input voltage levels. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard, along with a set of preamp outputs so you can easily pass signals to another amplifier.

The RD500/1 is also equipped with an onboard LED-clipping indicator. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity setting, quickly and accurately, with no special equipment needed. The RD500/1 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 control the subwoofer output directly from the driver’s seat.

TECHNICAL DATA:

RMS Power @ 14.4V250W x 1 @ 2Ω
350W x 1 @ 3Ω
500W x 1 @ 2Ω
Output Channels 1
Voltage 12v
Class D
Features NexD Switching
Differential Balanced Inputs
Fuse Rating 50A
Cable Gauge 4awg
Amp Turn-OnSignal Sensing
DC Offset
12V
Frequency Response 7-500Hz
Signal-to-Noise Ratio 80dB
Filter Low-Pass
Controller RBC-1 (Sold Separately)
Input Channels 2
Input Type High Level
Low Level
Input Sensitivity Low Level 200mV-2V
Input Sensitivity High Level 800mV-8V
Height (cm)5.4cm
Width 24.8
Depth 17.7cm