JL Audio VX600/1i VXi Series 600W RMS x 1 at 2 Ohm, Class-D Mono Subwoofer Car Amplifier with NexD2 Switching Technology and Built-In Digital Signal Processing Output
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What's Inside?
- • Monoblock amplifier
- • Power connector
- • 14" Analog Input harness (15-pin D-Sub/4 RCA)
- • Subwoofer output connector
- • 18" Speaker wire loom
- • "Sub" wire label
- • 6' USB cable (Type A USB on one end and Type B USB on other end)
- • (4) Corner caps
- • Corner cap tool
- • (2) Silver thumbscrews
- • (2) Black hex cap machine screws
- • 2.5 mm Allen wrench
- • 3 mm Allen wrench
- • JL Audio logo badge
- • Connection Guide
- • Registration card
- • Owner's Manual
Why Choose JL Audio VX400/4i Mono Subwoofer Amplifier?
Unleash Audiophile-Grade Sound
Unlock audiophile-grade performance with the VXi! Thanks to Onboard Tuning Power, every amplifier is equipped with a full suite of DSP tools—including equalization, delay, crossover routing, and mixing—giving you total control to craft perfect sound. This is backed by our Advanced Class-D Amplifier Design, which uses high-speed switching to deliver exceptional fidelity with ultra-low noise and distortion, guaranteeing a pure, powerful, and pristine listening experience.
NexD2 Power: The New Standard in Sound
Experience the revolution of NexD2 SWITCHING TECHNOLOGY we've significantly enhanced both fidelity and efficiency by employing cutting-edge components and more advanced circuit layouts, delivering an unprecedented level of pure, powerful, and crystal-clear audio performance!
Uninterrupted Power and Total Customization
Keep the music playing non-stop with our Advanced Rollback Protection a proprietary thermal-monitoring system intelligently adjusts amplifier operation to prevent irritating shutdowns even under extreme conditions. Combine this with the Fully Configurable Output Channel controlled by the intuitive TüN® Software on a compatible computer, tablet or smartphone, giving you full command over signal routing, EQ, output level, and DRC functionality—it’s total power and precision in your hands!
Frequently Asked Questions (FAQ)
- • Why won't my computer recognize the VX600/1i when I connect the USB cable to tune the bass?
This is usually a USB handshake or driver glitch. Disconnect the USB cable, close the TüN® software, and restart your computer. Always use the premium, short factory-included JL Audio USB cable directly to a built-in PC port, avoiding cheap extension cords or hubs.
- • I wired up my subwoofer completely, but the VX600/1i outputs absolutely no sound. Why?
Because VXi amplifiers are completely software-driven, audio does not route automatically. You must open the TüN® software, navigate to the "Input MUX" tab, and explicitly route an incoming audio signal to the subwoofer channel on the digital grid matrix.
- • Why does my amplifier status ring flash red rapidly and shut down during heavy bass drops?
The VX600/1i pulls intense current for its 600W mono output. If you used thin or cheap copper-clad aluminum (CCA) power wire, the voltage drops drastically under load, tripping the amp's low-voltage protection threshold. Upgrade to true 4-AWG pure oxygen-free copper (OFC) wiring.
- • Why is there a constant, quiet "humming" or "hissing" noise coming from my subwoofer even when the music is muted?
This is digital noise floor hiss from poor gain staging. Users often set the physical input sensitivity (gain) too high inside the TüN® software. Lower the digital input gain settings and rely instead on a cleaner, higher pre-out voltage from your head unit or factory integration module.
- • Can I use a generic telephone cord to extend my DRC-205 or DRC-260 bass remote knob?
No. The DRC controllers rely on a proprietary digital communication protocol. Standard telephone wires cross the internal pinning layout incorrectly, completely disabling the volume tracking and the LED status ring. Always use the authentic JL Audio multi-conductor data cable.
- • Can I safely wire a 1-ohm subwoofer load to the VX600/1i?
No. The VX600/1i is a monoblock, but it is strictly stable down to 2 ohms minimum. Wiring a 1-ohm subwoofer or dual 2-ohm subwoofers in parallel will pull too much current, causing the amplifier to rapidly overheat or immediately trip its over-current protection circuit.
- • Why does the amplifier temporarily reboot every single time my car engine restarts at a stoplight (Auto Stop-Start)?
When an auto-start vehicle refires, the starter motor draws massive current, sagging the electrical line below 10V. The digital processor inside the VXi cycles off instantly to prevent data and firmware corruption. Getting your car battery load-tested or adding an inline voltage stabilizer resolves this.
- • Is the VX600/1i waterproof or safe to install in an open jeep trunk or marine cabin?
No. The VXi series is engineered strictly for dry automotive cabins and is **not water-resistant**. It lacks the specialized powder-coated chassis and gasketed port seals found on JL's marine equipment. Mount it only in a fully protected, moisture-free area.
- Number of Channels : 1
- Frequency Response : 12-500 Hz
- Built In Crossovers : Yes
- RMS Power Output : 1x600 Watts
- Amplifier Class : D
- Fuse Rating : 50 A
- Promo : Yes
- Built In DSP : Yes
Features:
- Noise-Free Signal: Differential-balanced inputs eliminate noise from your vehicle's electrical system, including alternator whine and other unwanted sounds.
- Versatile Inputs: Preamp and speaker-level inputs (speaker wire to RCA adapter required for speaker-level input) allow flexible connectivity.
- High-Level Input Capacity: Handles up to 16 volts RMS (about 60 watts) for robust signal handling.
- Smart Auto Turn-On: DC offset or signal sensing eliminates the need for a remote lead.
- Digital Connectivity: 2-channel digital input and output (S/PDIF: up to 24-bit 192 kHz in, 24-bit 96 kHz out).
- Analog Output: 2-channel analog preamp output (4V RMS).
- JLid™ Expansion: Connections available for optional Network Hub, Bluetooth Communicator, and Digital Remote Control.
- USB Control: USB connection for devices running the TüN® app (6-foot cable included).
- Onboard Tuning Power: Full suite of DSP tools including equalization, delay, crossover routing, mixing, and more for precise audio customization.
- Advanced Class-D Amplifier Design: High-speed switching synchronizes power supply and output stages for exceptional fidelity with ultra-low noise and distortion.
- No Knobs or Switches: Entire setup and tuning is performed via TüN® software on computers or most handheld devices.
- Eliminate Audible Noises: Accepts speaker-level signals without a LOC and provides superior noise rejection.
- Advanced Rollback Protection: Proprietary thermal-monitoring system adjusts operation to prevent shutdowns and ensure continuous playback.
- Fully Configurable Output Channels: TüN® software allows complete control over signal routing, EQ, output levels, and DRC functionality.
- Hardware Note: Wiring, fuse, and other hardware are not included.
- Recommended Power Setup: 4-gauge power and ground leads with a 50-amp fuse recommended.
Digital Signal Processing:
- High-Resolution Audio Processing: 24-bit / 96 kHz digital audio processing
- Smart App-Based Tuning: DSP adjustments and settings via JL Audio’s TüN™ app (PC & Mac) using USB or Bluetooth with optional BTC module
- Multi-Level Tuning Control: Three project tuning levels: Basic, Advanced, and Expert
- Flexible Signal Management: Input routing and signal mixing
- Clean, Clipping-Free Setup: Adjustable gain controls with clip indication
- Fully Custom Crossovers: Adjustable high-pass, low-pass, and band-pass filters
- Precision Filter Slopes: Selectable slopes: 6, 12, 18, 24, 30, 36, 42, or 48 dB/octave
- Advanced Equalization: 10-band EQ with graphic control in Basic mode and parametric control in Advanced and Expert modes
- Total Phase Control: Phase and polarity adjustment
- Pinpoint Time Alignment: Time alignment adjustable in 0.01 ms (1/8") increments
TUN Desktop App:
Specifications:
- RMS Power Output (Watts x Channels): 400 x 1
- Peak Power Output (Watts x Channels): N/A
- Power at 2 Ohms (Watts x Channels): 600 x 1
- Power at 1 Ohm (Watts x Channels): ---
- Bridged Power (Watts x Channels): N/A
- Minimum Impedance Bridged: N/A
- Minimum Impedance Unbridged: 2
- Best Frequency Response: 12–500 Hz
- THD at Rated RMS Power: 1%
- Signal-to-Noise Ratio: 64 dB
- Input Voltage: 14.4V
- Amplifier Class: D
- Built-in DSP: Yes
- Remote Control: Via Tun software
- Low-Pass Crossover Frequency: Via Tun software
- Low-Pass Slope: Via Tun software
- High-Pass Crossover Frequency: N/A
- High-Pass Slope: N/A
- Bass Boost: No
- Bass Boost Frequency: N/A
- Fan Cooled: No
- Fuse Rating: 50
- Speaker Level Inputs: Yes
- Preamp Outputs: 2
- UPC: 699440986380
- Weight: 6
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for repair within 1 year from the original date of purchase with proper return authorization.
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