Description
JD-Series Monoblock Amplifier, 500-Watt @ 2-Ohm or 250-Watt @ 4-Ohm
Designed to produce a whopping 500 watts into 2 ohms (14.4V, 1% THD), the JD500/1 amplifier is a great solution for powering subwoofers in a cost-conscious system. JL Audio's proprietary NexD™ switching technology delivers large amounts of real-world power output with excellent efficiency and ultra-low distortion.
The JD500/1’s controls are located on the input panel. while the power and speaker connections can be found along the opposite end of its extruded aluminum 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 line-level and speaker-level signals. 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 JD500/1 is also equipped with an onboard LED-clipping indicator ring, surrounding the input sensitivity control. This useful feature lets you set your amplifier’s input sensitivity, quickly and accurately, without special equipment. With the addition of an RBC-1 remote level control (sold separately), you can control the subwoofer level from the driver’s seat.
General Specifications
| @ 4 Ω |
250 W RMS x 1 |
| @ 3 Ω |
350 W RMS x 1 |
| @ 2 Ω |
500 W RMS x 1 |
| 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™) |
| 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 |
No |
| 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 |
