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JL Audio JD1000/1

1000W RMS JD Series Class-D Monoblock Amplifier

JL Audio
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• 600 watts x 1 channel @ 4 ohms
• 1000 watts x 1 channel @ 2 ohms
• Total RMS Power: 1000 watts
• Class D 2 ohms Stable Monoblock Amplifier

Learn more about the jd10001
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Product Highlights


• 600 watts x 1 channel @ 4 ohms
• 1000 watts x 1 channel @ 2 ohms
• Total RMS Power: 1000 watts
• Class D 2 ohms Stable Monoblock Amplifier

Description


JL Audio brand icon

Authorized dealer

Product Overview:

Designed to produce a whopping 1000 watts into 2 ohms (14.4V, 1% THD), the JD1000/1 amplifier is a great solution for powering subwoofers in a cost-conscious system. Our proprietary NexD™ switching technology delivers large amounts of real-world power output with excellent efficiency and ultra-low distortion.

The JD1000/1’s controls are located on the input panel. while the power and speaker connections can be found along the opposite end of its extruded aluminum chassis. Signal processing features include a 12 dB / octave low-pass filter, with continuously variable frequency selection from 50-500 Hz, and a variable bass boost EQ. Dual-range, differential-balanced inputs are also on-hand, capable of accepting line-level and speaker-level signals. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard, along with a set of preamp outputs so you can easily pass signals to another amplifier.

The JD1000/1 is also equipped with an onboard LED-clipping indicator ring, surrounding the input sensitivity control. This useful feature lets you set your amplifier’s input sensitivity, quickly and accurately, without special equipment. With the addition of an RBC-1 remote level control (sold separately), you can control the subwoofer level from the driver’s seat.

NexD Switching Technology

Let's get a little nerdy... A traditional PWM switching amp design uses a fixed switching frequency and varies the pulse width based solely on the audio input signal to the pulse modulator. This basic approach assumes some ideal conditions, like a rock-steady power supply, that do not necessarily occur in a real, in-car installation. Power supply sag with signal causes distortion at all power levels with these designs, even well below clipping. The cure for this is feedback (a corrective signal sent back to the input side), but this becomes impractical as the audio frequency increases, making it a good solution for band-limited (subwoofer) amps, but not for full-range amplifiers.

Taking the above into account when designing the NexD™ subwoofer amplifiers, we have taken the simple fixed PWM approach and enhanced it with a very high switching frequency: 240 kHz, which is about 4x higher than most Class D subwoofer amplifiers. This pushes the amplifier's bandwidth to at least 500 Hz with minimal distortion and improves efficiency, while keeping typically bulky circuity more compact. Your subwoofers will reward you with tight, rock-solid bass performance.

For the full-range NexD™ amplifiers and channels we applied a variable, ultra-high speed version of the NexD™ technology (switching at well over 400 kHz). In these designs, a self-oscillating modulator with "feed-forward" sends information about the instantaneous power supply voltage to the modulator, combining this with the input signal to cancel out any distortion due to supply voltage fluctuation. This reduces distortion prior to applying feedback, simplifying the overall feedback loop design.

Differential-Balanced Inputs

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 the 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.

Product Details:

  • JD Series Class D 2 ohms Stable Monoblock Amplifier
  • RMS Power Rating:
    • 4 ohms: 600 watts x 1 channel
    • 2 ohms: 1000 watts x 1 channel
  • Total power output: 1000 watts
  • LED Power/Protect Light
  • Wired bass level remote control with optional JL Audio RBC-1
  • Speaker-level (high-level) inputs (Requires adapter like the JL Audio XD-CLRAIC2-SW)
  • Signal sensing remote turn-on
  • Protection Circuitry with Status LED
  • NextD™ switching amp technology
  • Differential-balanced inputs help eliminate noise
  • Advanced Rollback Protection System prevents thermal shut-down
  • Speaker-level (high-level) inputs
  • Input sensitivity:
    • Low level: 200mV - 2 volts
    • High level: 800mV - 8 volts
  • Frequency Response: 7 - 500 Hz
  • Total Harmonic Distortion (THD): >1%
  • Signal to Noise Ratio: >80 dB
  • Variable low-pass filter: 50 - 500 Hz
  • Variable Bass Boost: 0 - 12 dB
  • Fuse Rating: 80A
  • 4 AWG gauge amplifier wiring kit is recommended for installation
  • Dimensions: 11-3/4" L x 7-1/2" W x 2-1/8" H
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty
  • MFR #: JD1000/1

Check out the JL Audio JD1000/1 Owner's Manual

Specifications & Details


Key Features
Amplifier Key Features
Bass Boost
Speaker Level Inputs
Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
600 watts x 1 channel
RMS Power @ 2 ohms
1000 watts x 1 channel
Amplifier Specifications
Series
JD Series
Amplifier Class
D
Number of Channels
1 - Mono
Total RMS Power Output
1000 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
Not Bridgeable
Frequency Response
7 - 500 Hz
THD at Rated RMS Power
>1%
Speaker Level Inputs
Yes
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
50 - 500 Hz
Signal-to-Noise Ratio
>80 dB
Bass Boost
0 - 12 dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Fuse Rating
50A x 1 
Total Fuse Rating
80
Strappable
No
Sonic Certified Amplifier
Yes
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
Low-Level Input Sensitivity
200mV - 2 volts
High-Level Input Sensitivity
800mV - 8 volts
What is in the box?
Paperwork
User manual
Warranty/Registration card
WITB: Amplifiers
Amplifier
Mounting screws (4)
Washers (4)
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

JD1000/1

Weight:

8.00lbs

Internal SKU:

jd10001

Internal Product ID:

178359

Product and How-to Videos


Customer Ratings & Reviews



5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Excellent quality like you would expect from JL Audio

I upgraded from the jx 1000/1 to this JD 1000/1 monoblock amp and it is absolutely an upgrade further than what I expected. I expected almost the same product. Between the jx and the JD there are major differences when it comes to sound and signal management. My favorite aspect is the red ring that lights up around the game adjuster when you are getting a clipped signal. No more guesswork involved! This is especially helpful when you are doing the recommended gain adjustment that is given to you in your manual that comes with the amplifier. Personally, I need to keep my gain much lower than the level I could put it up to without getting a clipped signal, although it overloads my door and dash speakers. So in order to get the good sound quality, I must dial it back some so the mix is both hard-hitting but also collaborative. I use this amp to run a JL w3 V3 12-in subwoofer. I used to use it and run them in parallel down to two ohms and I found there is absolutely no need to run 2 of these subwoofers. Just one of them hits plenty hard enough. The amplifier is A cut above any other amplifier I have owned. Including my previous jx1000 version. There are three separate signal detectors. As I stated, there is a red light that comes on when you are getting a clipped signal when your gain is too high. Along with other little regular goodies such as your bass boost that is centered at 45 hz. I find no use in using the bass boost. But to each their own. I have always ran to our audio everything when it comes to speakers amps and subs. And as long as they continue their progress and engineering as they have in the past, I always will. Personally the best deal I could find online was from Sonic electronics.com and I think them for that. I've ordered multiple products from these guys. And most of the reason being is because they are the cheapest I can find, yet they are not just some backdoor slinging company. They are authentic dealers of whatever company they are selling for. Including JL audio.

By Robert L on July 8, 2021 Checkmark Icon Verified purchase

36

found this helpful.

By Eliezer on February 17, 2024 Checkmark Icon Verified purchase

7

found this helpful.

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