Description
Included in this kit
This bundle includes a JL Audio RD500/1 500W Class D Monoblock Subwoofer Amplifier, and a JL Audio RD400/4 Class D 4-Channel Full-Range Amplifier.
1x JL Audio RD500/1 500W Class D Monoblock Subwoofer Amplifier (RD500/1)
RD500/1
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.
Rated Continuous (RMS) Power @ 14.4 V
| @ 4 Ω | 250 W RMS x 1 |
| @ 3 Ω | 350 W RMS x 1 |
| @ 2 Ω | 500 W RMS x 1 |
| @ 1.5 Ω | N/A |
Rated Continuous (RMS) Power @ 12.5 V
| @ 4 Ω | 225 W RMS x 1 |
| @ 3 Ω | 300 W RMS x 1 |
| @ 2 Ω | 400 W RMS x 1 |
| @ 1.5 Ω | N/A |
General Specifications
| Frequency Response | 7 Hz - 500 Hz (+0, -1dB) |
| S/N Ratio, referred to highest rated power | >80 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
| S/N Ratio, referred to 1 W | >60 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
| Damping Factor @ 4 Ω | >1000 / 50 Hz |
| Damping Factor @ 2 Ω | >500 / 50 Hz |
| THD+N @ Rated Power | <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 | 50 A (AFS, AGU or MaxiFuse™) |
Signal Processing
| Filter Mode(s) | Low-Pass only |
| Filter Slope(s) | 12 dB/octave |
| Filter Frequency Range | 50 Hz - 500 Hz |
| Detented, Calibrated Filter Freq. Potentiometer | No |
| Filter Defeat Function | No |
| Infrasonic Filter | 30 Hz, defeatable |
| Bass Boost EQ | Yes |
| Output Polarity Switch | No |
| Remote Subwoofer Level Control | Optional (RBC-1) |
| Remote Bass EQ Boost Control | No |
| Pass-Through Preamp Output | Buffered |
Physical Specifications
| Height (H) | 2.13 in / 54 mm |
| Width (W) | 9.78 in / 372 mm |
| Depth (D) | 6.96 in / 177 mm |
1x JL Audio RD400/4 Class D 4-Channel Full-Range Amplifier (RD400/4)
RD400/4
4-Channel Class D Full-Range Amplifier, 100 W x 4 @ 2 Ω / 75 W x 4 @ 4 Ω - 14.4V
Utilizing our exclusive NexD™ high-speed switching technologies, the ultra-compact RD400/4 amplifier is engineered to deliver loads of audio output power, with incredible efficiency and low distortion. Don’t let its modern styling and small size fool you though, this little powerhouse churns out 100 watts of crystal-clear audio from each of its four channels into 2 ohms (14.4V, 1% THD) and is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a whopping 200W x 2 into 4 ohms.
For your convenience, the RD400/4’s controls can be found on top of the amplifier, beneath a protective cover, with all connections located along one side of its chassis. Studio-grade signal processing features include high or low-pass 12 dB / octave filters (defeatable) for each channel pair, with continuously variable frequency selection from 50-500 Hz, and dual-range, differential-balanced inputs capable of accepting most input voltage levels. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment, along with all-new input type switches for bridging of stereo output channels without needing to use Y-adaptors.
Onboard LED-clipping indicators are also included with your RD400/4. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity settings, quickly and accurately, with no special equipment needed. You’ll also find a set of preamp outputs on-hand, so you can pass signals to another amplifier, almost effortlessly. The RD400/4 features a durable, black powder-coated finish and a top-mounted, dual-color LED light strip that reports the overall status and condition.
Rated Continuous (RMS) Power @ 14.4 V
| @ 4 Ω | 75 W RMS x 4 |
| @ 3 Ω | 100 W RMS x 4 |
| Bridged @ 4Ω | 200 W RMS x 2 |
Rated Continuous (RMS) Power @ 12.5 V
| @ 4 Ω | 60 W RMS x 4 |
| @ 3 Ω | 90 W RMS x 4 |
| Bridged @ 4Ω | 180 W RMS x 2 |
General Specifications
| Frequency Response | 12 Hz - 22 kHz (+0, -1dB) |
| S/N Ratio, referred to highest rated power | >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 | <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 | 40 A (AFS, AGU or MaxiFuse™) |
Signal Processing
| Filter Mode(s) | Low-Pass or High-Pass |
| Filter Slope(s) | 12 dB/octave |
| Filter Frequency Range | 50 Hz - 500 Hz |
| Detented, Calibrated Filter Freq. Potentiometers | No |
| Filter Defeat Function | Yes |
| Remote Level Control | No |
| Remote Level Modes | N/A |
| Channel Input Mode Switch | Yes (2/4 ch.) |
| Pass-Through Preamp Output | Buffered |
| Source Channel Selection for PreOuts | No |
Physical Specifications
