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Monoblock Class D Subwoofer Amplifier with Integrated DSP, 1000 W x 1 @ 2 Ω / 600 W x 1 @ 4 Ω - 14.4V
Designed to simplify great audio, every VXi amplifier combines our advanced NexD2â„¢ switching amplifier technology with an integrated, full-featured digital signal processor.
The VX1000/1i monoblock subwoofer amplifier outputs up to 600 watts into 4 ohms, or a jaw-dropping 1000 watts into 2 ohms. A specialized, low-frequency version of our NexD2â„¢ amplifier technology delivers rock-solid bass performance and fidelity, with outstanding efficiency. Compact dimensions with all connections placed on one side, via mating plugs, 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 2 AWG wire), Analog Input/Pre-Out Harness, Subwoofer Output Connector, 6 ft A/B USB Cable
Unprecedented, Onboard DSP Tuning Power!
2nd-Gen NexD2â„¢ Switching Amplifier Technology
Ultra-Versatile Analog and Digital Inputs/Outputs

JLidâ„¢ System Command and Control with Networking Capabilities
Download and test-drive all TüN® software versions in simulation mode for free (no VXi hardware needed).
@ 4 Ω | 600 W RMS x 1 |
@ 3 Ω | 800 W RMS x 1 |
@ 2 Ω | 1000 W RMS x 1 |
@ 1.5 Ω | N/A |
@ 4 Ω | 500 W RMS x 1 |
@ 3 Ω | 650 W RMS x 1 |
@ 2 Ω | 800 W RMS x 1 |
@ 1.5 Ω | N/A |
Frequency Response | 12 Hz - 500 Hz (+0, -1dB) |
S/N Ratio, referred to highest rated power (Analog Inputs) | 87 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
S/N Ratio, referred to 1 W (Analog Inputs) | 60 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
S/N Ratio, referred to highest rated power (Digital Inputs) | 87 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
S/N Ratio, referred to 1 W (Digital Inputs) | 56 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
Damping Factor @ 4 Ω | >400 / 50 Hz |
Damping Factor @ 2 Ω | >300 / 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 | 80 A (AFS, AGU or MaxiFuseâ„¢) |
Height (H) | 2.12 in / 54 mm |
Width (W) | 11.32 in / 287 mm |
Depth (D) | 6.62 in / 168 mm |
Net Weight | 6.55 lb / 2.95 kg |
Summary:
JL Audio's NexD2â„¢ amplifier technologies are a next-level approach to improving what is already an outstanding Class D design platform. Employing new components and more advanced circuit layouts, fidelity and efficiency have been significantly enhanced.
Detailed Information:
NexD2â„¢ switching technologies are an evolution of our renowned NexDâ„¢ Class D technology, with significant improvements in fidelity, efficiency and radiated noise performance.
NexD2™ employs a new generation of power supply and output devices, which are incredibly compact and surface-mountable. These Infineon® DirectFETTM devices feature the latest MOSFET silicon technology, the smaller package reduces parasitic capacitance and inductance thus improving current carrying capability and efficiency, encased in a metal enclosure to optimize heat dissipation. They also minimize radiated noise.
In addition to the new silicon, NexD2â„¢ benefits from advancements in the area of circuit layout. Our "minimum loop area" design approach places capacitors closely coupled to each output section, and the amplifier circuits have been engineered to minimize the length of ground return paths. This approach reduces interaction between the audio channels, to improve separation and reduce distortion and radiated noise.
In the multi-channel VXi amplifiers, we have also leveraged the power of the on-board DSP to synchronize all channels via the DSP's master clock. This eliminates undesirable interactions between channels that are caused by variations in switching frequency.
The resulting NexD2â„¢ amplifiers are incredibly compact and efficient, while delivering a level of fidelity that will satisfy the most demanding listener.
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Summary:
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.
Detailed Information:
Should a JL Audio amplifier equipped with Advanced Rollback Protection reach an unsafe operating temperature, a special circuit rolls back peak power output, without changing gain, until the amplifier cools down to a safe operating temperature. The condition is generally indicated by a red “Thermal†or “Status†LED state. On VXI amplifiers, the LED ring will flash red. Once the amplifier cools down, the circuit restores full peak power output and the indicator reverts to its normal state. The operation of Advanced Rollback Protection is inaudible in most cases, but it ensures that your music keeps on playing, even under the most demanding conditions.
Summary:
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.
Detailed Information:
Today’s vehicles are equipped with sophisticated electronics capable of generating noise and interference that can intrude into the audio path, ruining the listening experience.
Most audio equipment uses single-ended, ground-referenced RCA jacks to receive audio signals. This means that the RCA shield is connected directly to signal ground. This is a simple, cost effective input design that works well for short runs in noise free environments. In noisier environments, this method cannot reject the common mode noise that could be on both RCA conductors (shield and center conductor).
By having more than one chassis-grounded RCA shield on a device, single-ended input designs are also more susceptible to ground loops. If noise is present on both conductors while the shield is connected to ground, the input amplifier will amplify the noise relative to the grounded RCA shield. When there are multiple RCA connections or any other conductors subjected to a magnetic field, this will cause a difference in potential across the RCA loop to be amplified at the grounded RCA as noise (a classic ground loop).
JL Audio’s Differential-Balanced Input circuits measure the center pin of the RCA connection relative to the RCA shield, even when the shield is not connected to ground, and even when the voltages at both conductors are moving relative to ground. Because both the center conductor and the shield see high impedance to ground at the input, a ground loop cannot be formed, as there is no current flow to induce a voltage as noise. This works equally well with differential-balanced, or unbalanced signal sources, making this input architecture compatible with all standard car and marine audio equipment, using standard, unshielded, twisted-pair RCA cables. No special cables are required, unlike the fully balanced connections used in professional audio.
Another benefit of the Differential-Balanced Input design is that it easily accepts low-level and high-level signals from a variety of factory head unit outputs and amplifiers, including single ended “ground referenced†sources, as well as Balanced or Unbalanced “Bridged or BTL†sources. This eliminates the need for Line Output Converters (LOCs) in most installation scenarios.
The obvious question is: “Why don’t all car audio amplifiers use Differential-Balanced Inputs?†The answer is simple: it costs more. Executing a proper differential-balanced input section requires more components and better quality components than a basic single-ended design, so you generally won’t find them on less expensive amplifiers.
Summary:
JLidâ„¢ is JL Audio's protocol for digital controllers and for communication of settings between devices (not for audio signals).
Detailed Information:
JLidâ„¢ offers two-way communication for a range of accessories, including the following:
   Wired System Controllers: DRC-100, DRC-200, DRC-205, M-DRC-50
   Networking Accessory: VXi-HUB, MVi-HUB
   Wireless Bluetooth® Communicator: VXi-BTC
JL Audio FiX® and TwK® processors each feature one JLid™ port, designed for connection of a wired controller.
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JL Audio VXi and MVi amplifiers offer powerful networking capabilities via JLid™, to deliver single-point control of multiple amplifiers in a system. This allows the listener to adjust levels (Volume, Fader, Balance, Zone Level) and to easily select from multiple DSP presets, across an entire group of networked amplifiers. Each VXi amplifier is outfitted with separate JLid™ Control and JLid™ Comm ports. DSP equipped MVi amplifiers include a single JLid™ Comm port. Please refer to each product’s manual and our Help Center for details.
JLidâ„¢ connections are made via standard CAT-5e cables.
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USA Limited Warranty: Â Two (2) years from the original date of purchaseWarranty Details
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Find the answers to many common questions:
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"Every once in a while, a product comes along that's truly innovative and could represent the future of the category. In my opinion, such a product is the VXi Series of amplifiers from JL Audio."
"Backing up my listening experience, the signal-to-noise performance is very good for a DSP-powered Class-D amplifier, and in fact better than some analog amps I've measured. This is a serious accomplishment and my hat's off to the engineering team."
– Garry Springgay, Performance Auto & Sound
TUNING ESSENTIALS // 2018 TECH & CAR AUDIO // 9TH EDITION... on the VX700/5i
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You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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