JL Audio VX400/4i 4-Channel Class D Amplifier with Integrated DSP

JL Audio VX400/4i 400 Watt 4-Channel Class D Amplifier with Integrated DSP

Overview

Designed to simplify great audio, every VXi amplifier combines our advanced NexD2™ switching amplifier technology with an integrated, full-featured digital signal processor.

With our second-generation NexD2™ technology, the VX400/4i full-range amplifier outputs up to 75 watts per channel into 4 ohms, or 100 watts into 2 ohms. It can also be bridged into 4 ohms, producing up to 200 W x 2.

The NexD2™ full-range technology in the main channels of this amplifier is DSP-controlled and features a reduced loop area design utilizing DirectFET™ outputs for outstanding fidelity, very low noise and exceptional efficiency. The subwoofer channel features an optimized low-frequency variant of the NexD2™ technology. The amplifier chassis is ultra-compact, with all connections on one side, to greatly simplify installation into tight spaces.

Instead of traditional control knobs and switches, all amplifier adjustments and DSP functionality are configured via a compatible external device (PC, Tablet or Smartphone), with the appropriate JL Audio TüN™ Software application installed.

Amplifier includes: Power Connector (for 4 AWG wire), Analog Input/Pre-Out Harness, Speaker Output Harness, 6 ft A/B USB Cable

Specifications

Rated Continuous (RMS) Power @ 14.4 V
@ 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 Specifications
Frequency Response: 12 Hz - 24 kHz (+0, -1dB)
S/N Ratio, referred to highest rated power
(Analog Inputs): 99 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W
(Analog Inputs): 80 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to highest rated power
(Digital Inputs): 101 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W
(Digital Inputs): 81 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
Damping Factor @ 4 Ω: >100 / 50 Hz
Damping Factor @ 2 Ω: >50 / 50 Hz
THD+N @ Rated Power: <1% @ 2 Ω per Ch.
Input Voltage Range @ RCA Inputs: 200 mV - 16 V RMS
Min.Copper Power / Ground Wire Gauge: 4 AWG wire
Fuse Rating: 40 A (AFS, AGU or MaxiFuse™)

Physical Specifications
Height (H): 2.12 in / 54 mm
Width (W): 9.02 in / 229 mm
Depth (D): 6.62 in / 168 mm
Net Weight: 5.0 lb / 2.27 kg