JL Audio VX700/5i VXi Series 5 Channel Full Range Amplifier DSP Amp 700w RMS

The JL Audio VX700/5i is a 5-channel Class D system amplifier with integrated DSP, rated at 700 W RMS total — 75 W RMS x 4 @ 4 Ω (main) plus 300 W RMS x 1 @ 2 Ω (subwoofer) at 14.4 V. It is part of JL Audio's VXi Series.

Several VXi amplifiers can be networked using the VXi-HUB (sold separately). For a more powerful 5-channel option, see the VX1000/5i.

Key specifications

• Channels: 5 (4 main + 1 subwoofer), Class D with integrated DSP
• Main channels (14.4 V): 75 W RMS x 4 @ 4 Ω, 100 W RMS x 4 @ 2 Ω
• Main channels bridged: 200 W RMS x 2 @ 4 Ω
• Subwoofer channel: 300 W RMS @ 2 Ω, 240 W @ 3 Ω, 180 W @ 4 Ω
• Frequency response: 12 Hz – 24 kHz (main), 12 Hz – 1 kHz (sub)
• DSP: 10-band parametric EQ per output channel, 24 bit/96 kHz processing
• Inputs: differential-balanced analogue (200 mV – 16 V RMS) plus optical Toslink up to 24 bit/192 kHz
• Fuse rating: 60 A

Overview

The VX700/5i uses JL Audio's second-generation NexD2™ switching amplifier technology combined with a full-featured integrated DSP. One compact chassis powers a complete audio system — four main speakers plus a subwoofer — tuned entirely through JL Audio's TüN™ software. Bridging the main channels converts it to a 3-channel system: 200 W x 2 @ 4 Ω (main) and 300 W @ 2 Ω (subwoofer).

The NexD2™ full-range technology used in the main channels is DSP-controlled and features a reduced loop area design with DirectFET™ outputs for low noise and high efficiency. The subwoofer channel runs an optimised low-frequency variant of NexD2™. All connections are on one side of the ultra-compact chassis, simplifying installation in tight spaces.

All adjustments and DSP settings are configured via JL Audio TüN™ software on a compatible PC, tablet or smartphone — there are no traditional knobs or switches.

TüN™ Software

TüN™ automatically recognises the connected amplifier and displays the appropriate interface. It is available as a free download for computers and most handheld devices.

Onboard DSP

• Premium triple-core AKM® DSP, developed in collaboration with AKM®
• Hi-res audio processing at 24 bit/96 kHz
• High-performance AKM® A/D and D/A converters
• 10 bands of fully parametric EQ per output channel, including pre-outs
• Shelving EQ option for Band 1 and Band 10
• High-pass and low-pass filters per output channel with selectable alignments and slopes:
• Linkwitz-Riley: 12, 24, 48 dB/octave
• Butterworth: 6, 12, 18, 24, 36, 48 dB/octave
• Signal delay in 0.01 ms steps (equivalent to 1/8 inch / 3 mm)
• All-pass filter (phase EQ) with variable Q and corner frequency
• Polarity reversal (0° or 180°)
• Output level trim in 0.1 dB steps

NexD2™ Switching Amplifier Technology

• Latest-generation high-speed switching technology delivers full-range power, fidelity and efficiency.
• DSP acts as central clock for all channels to improve audio quality and reduce noise.

Analogue and Digital Inputs

High-performance differential-balanced analogue inputs provide strong noise rejection and accept speaker-level signals from 200 mV up to 16 V RMS, including signals from many factory head units.

Optical digital (Toslink) input allows direct connection of S/PDIF digital sources, bypassing the A/D converter. Accepts up to 24 bit/192 kHz.

Independently configurable RCA analogue and digital pre-outs (24 bit/96 kHz). Automatic turn-on via signal-sensing or DC-offset sensing.

Chassis Design

• Solid cast alloy unibody and bottom plate for strong EMI shielding
• Compact mating connectors on all connections for reliable fitment in tight spaces
• Configurable LED logo ring shows status, audio preset colour code or a user-defined colour
• Logo badge orientates in 90° increments
• Corner caps conceal mounting holes and hardware

JLid™ Networking and Control

JL Audio's JLid™ digital protocol enables control and communication between VXi amplifiers and optional accessories, including:

• DRC-100 / DRC-200 / DRC-205 Digital Remote Controllers: level and DSP preset control from the driver's seat
• VXi-BTC Bluetooth® Communicator: wireless configuration of VXi amplifiers via a compatible Apple® or Android® device
• VXi-HUB Optical Network Hub: connects up to five slave VXi amplifiers for synchronised DRC control and DSP presets. Up to two VXi-HUBs can be daisy-chained to network up to ten VXi amplifiers.