JL Audio 4-Channel Class D Full-Range Car/Marine Amplifier - 98681

JL Audio 98681 4-Channel Class D Full-Range Car/Marine Amplifier

The ultra-compact XDM400/4 packs a serious full-range punch, generating a whopping 100 watts to each of its four channels into 2 ohms (14.4V, 1% THD). The technology that makes this much power possible in such a compact chassis is our advanced NexD™ high-speed switching design, which permits full bandwidth Class D operation with extremely low distortion and remarkable efficiency.

Suitable for car or boat installations, the XDM400/4 is built with marine-grade materials and features an exclusive, dual-mode input filter for noise-free performance in boats or cars. Automatic turn-on capability (via signal sensing or DC-offset sensing) is also onboard for easy factory system upgrades.

Combine the XDM400/4 with our XDM600/1 monoblock to build a stunning 1000 W amplification system to power four satellites and a subwoofer... and fit the whole thing under a seat or deck. Or, use the XDM400/4 by itself to power two satellites, plus a subwoofer.

The XDM400/4 includes a 12 dB / octave filter for each channel bank, which can be configured as a low-pass or high-pass filter and offers continuously variable cutoff frequency selection from 50-500 Hz. With the addition of an optional HD-RLC or MHD-RLC (water-resistant) remote level controller (each sold separately), you have the ability to adjust the level of all amplifier channels or just the rear channels directly from the driver's seat or cockpit.

Finished in a sleek, black powder-coat, all controls are protected beneath a gasketed, removable top cover for easy access.

Features

• NexD™ Switching Technology
  NexD™ amplifier technologies produce exceptional audio quality, unsurpassed total efficiency and high power from very compact amplifier designs.
• Advanced Rollback Protection
  JL Audio's exclusive Advanced Rollback Protection circuit monitors the amplifier's thermal condition and adjusts amplifier operation to eliminate annoying amplifier shut-down events.
• Differential-Balanced Inputs
  JL Audio’s Differential-Balanced Inputs are engineered to combat induced cable noise, which is a common problem in car and marine audio installations. This technology allows for the use of conventional RCA cables, while delivering many of the benefits of a true balanced connection and accepting a wide range of input signal levels.

Specifications

Rated Continuous (RMS) Power @ 14.4V

• @ 4 Ω: 75 W RMS x 4
• @ 2 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
• @ 2 Ω: 90 W RMS x 4
• Bridged @ 4Ω: 180 W RMS x 2

General

• 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: 200 mV - 4 V RMS
• 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: Yes
• Filter Defeat Function: Yes
• Remote Level Control: Optional HD-RLC or MHD-RLC (water-resistant)
• Remote Level Modes: 2 or All channels
• Channel Input Mode Switch: Yes (2/4 ch.)
• Pass-Through Preamp Output: Buffered
• Source Channel Selection for PreOuts: Yes