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JL Audio JX250/1 Amplifier

JL Audio JX250/1 250W RMS JX Series Monoblock Class A/B Subwoofer Amplifier

JL Audio
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• Peak: 175W x 1 @ 4 ohms, 210W x 1 @ 3 ohms, 250W x 1 @ 2 ohms
• Unregulated PWM switching type power supply
• Class D Circuitry
• Bass Boost: 0-12 dB
• Speaker-level (high-level) inputs with included harness
• Dimensions: 7.68"W x 10.94"L x 2.09"H

Learn more about the jx2501

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

jx2501d thumbnail

JL Audio JX250/1D

OUR PRICE: $179.99

View item

Product Highlights


• Peak: 175W x 1 @ 4 ohms, 210W x 1 @ 3 ohms, 250W x 1 @ 2 ohms
• Unregulated PWM switching type power supply
• Class D Circuitry
• Bass Boost: 0-12 dB
• Speaker-level (high-level) inputs with included harness
• Dimensions: 7.68"W x 10.94"L x 2.09"H

Description


JL Audio brand icon

Authorized dealer

JL Audio JX250/1

JL Audio JX250/1 - JX Series Monoblock Class D Subwoofer Amplifier

The JL Audio JX Series of amplifiers are designed with a specific purpose; to deliver clean, rock-solid performance and reliability at an affordable price. Unlike gimmicky price-conscious amplifiers, JL Audio employs specified oversized output transistors and rugged MOSFET power supplies to unsure proper current, thermal capacity and better overall performance. In addition, the JX250/1 includes flexible signal processing capabilities with a fully variable 12 dB/octave crossover filter, pass-through preamp outputs and a Bass EQ. With the optional JL Audio RBC-1 Remote Level Control (sold separately), you can control the subwoofer volume from the front of the vehicle.

JX monoblock subwoofer amplifiers are specifically designed to drive subwoofers. Their frequency response is limited to the range below 150 Hz., making them unsuitable for driving midrange speakers or tweeters.

Integration Flexibility

Integration Flexibility

For those systems that do not offer a preamp level signal option, you can connect speaker level signals directly to the "Hi-Level Inputs" connector using the supplied connector and wire harness. Simply splice the appropriate left/right and positive/negative wires to the included harness and plug the harness into the "Hi-Level Inputs" connector on the amplifier. The JX monoblock will attenuate the high-level signal to make it compatible with its input stage. Alternatively, a traditional left/ right pair of RCA type jacks is used for preamp level (low-level) signals. This is the preferred connection method whenever available.

Low-Pass Active Filter

Low-Pass Active Filter

The JX monoblock features a 12 dB/octave low-pass active filter for its internal channel. This feature is designed to attenuate frequencies above its filter frequency, so that the system's subwoofer(s) do not reproduce any audible and often harmful mid-range frequencies. The low-pass filter is fully variable between 50 Hz and 200 Hz via the “Filter Frequency” control knob. 80 Hz is a good starting point for system tuning, but its also advisable to match the crossover point with that of your satellite speakers' high-pass filter - this ensures that your system is properly distributing the frequencies to the appropriate medium.




General Features:

  • JX Series Monoblock Class D Subwoofer Amplifier
  • RMS Power Rating (14.4V):
    • 4 ohms: 175 watts x 1 chan.
    • 3 ohms: 210 watts x 1 chan.
    • 2 ohms: 250 watts x 1 chan.
  • RMS Power Rating (12.5V):
    • 4 ohms: 130 watts x 1 chan.
    • 3 ohms: 170 watts x 1 chan.
    • 2 ohms: 210 watts x 1 chan.
  • Unregulated PWM switching type power supply
  • LED power (green) and protect (red) indicators
  • Soft start turn-on prevent clicking and popping when system turns on
  • Speaker-level (high-level) inputs with included harness
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heatsink for effective heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Dual speaker terminals simplify the hookup of multiple speakers
  • Remote bass level input (JL Audio RBC-1 sold separately)
  • Input sensitivity:
    • Low level input: 200mV - 4V
    • High level input: 2.0mV - 10.0V
  • Variable Bass Boost: 0 to +12 dB bass boost centered at 45 Hz
  • Variable low-pass filter: 50 - 200 Hz, 12 dB/octave
  • Frequency Response: 10 - 150 Hz ± 1 dB
  • Total Harmonic Distortion (THD): 1%
  • Signal to Noise Ratio: >87 dB
  • Damping Factor @ 4 ohms: >160 @ 4 ohms
  • Fuse Rating: 30A x 1 inline (not supplied)
  • 8 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier.
  • Weight: 3.80 lb
  • Dimensions: 7.68"W x 10.94"L x 2.09"H
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty
Check out the JL Audio JX250/1 Owner's Manual

Product history:

JL Audio JX250/1D thumbnail
(newest, current model)
JL Audio JX250/1 thumbnail
(previous model, replaced by JL Audio JX250/1D)

This item is currently not eligible for our low price guarantee. This may be due to supply constraints, manufacturer restrictions, or another reason. We're always here to help you get the best price possible so give us a call or email today. Our experts will do their best to build the system that works for you within the rules.

Specifications & Details


Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
175 watts x 1 channel
RMS Power @ 2 ohms
250 watts x 1 channel
Amplifier Specifications
Series
JX Series
Amplifier Class
A/B
Number of Channels
1 - Mono
Total RMS Power Output
250 watts
Maximum Input Gauge Size
8 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
Not Bridgeable
THD at Rated RMS Power
1%
Speaker Level Inputs
Yes - with included adapter
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
50 - 200 Hz
Signal-to-Noise Ratio
87 dB
Bass Boost
0 - 12 dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Fuse Rating
30A X 1 In-Line Fuse Recommended
Strappable
No
Sonic Certified Amplifier
Not Tested
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

JX250/1

Weight:

6.77lbs

Internal SKU:

jx2501

Internal Product ID:

33532

Product and How-to Videos


Customer Ratings & Reviews



5 star
50%
4 star
33%
3 star
17%
2 star
0%
1 star
0%



Durability
4.2
Value
3.7
Features
3.9
Design
4.4
Usability
4.5

Customer Reviews

Sort by:

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Still don't understand JL's value

I bought this product based off reviews and JL's popular name, I should have done more research. It's a great product, easy to use, but for the price I paid, I just don't understand why. In my lifetime, I've owned Elemental Designs, Hifonics, Bazooka, all with more rms, and paid about the same, if not less. Performance wise, I couldn't tell much of a difference. I would understand if the JX was underrated, but it was rated just right.

I hate how it didn't come with a remote bass knob (sold separately, and for a lot) and not that it matters, but it doesn't have phase or subsonic filter - for that price.

By Erik on October 14, 2013

36

found this helpful.

andrew

the jx250/1 is a great little amp for your sub. mine draws a bit too much current and gets a bit hot only when being caned 93db. would suit a 10" perfect. bit small for the 12" 250w rms 2ohm dual coil I run but does the job

By no on May 27, 2013

33

found this helpful.

Not bad

I bought this amp on impulse at the local shop. I installed it under the seat in my suv and ran the jl ported w1 8" sub/box @ 4ohm. The amp never got hot under the seat, stayed cool after long play. I never tested it @ 2ohm. I ended up buying a bigger amp to run something different. This amp won't produce more than what it is rated, but it will run it's rated power efficiantly and decently clean.

By jacob on October 30, 2011

34

found this helpful.

awesome!

This amp is very powerful. I got it installed today with 2 10" JL audio vented subs. It hits harder than my friends setups and they have like 500 and 700 watt amps (they're not JL amps) JL is top of the line in subs and amps and in quality sound! Definitely a good thing to buy because the good price and how powerful it is, therefore you can get a really good wiring kit! Just put it this way, my parents got this for my setup and there pissed cause of how loud the bass is!

By chance1844 on December 26, 2011

32

found this helpful.

Great Amp

JL amp is driving my 12" woofer. It was easy to install and had great directions for adjusting it to my subwoofer. Urea a great improved to my sound system in my truck. It also really bumps when I want to. I am planning on buying another one.

By Ski Bum on August 15, 2012

30

found this helpful.

Compact and solid performance.

Used this to provide a cleaner, adjustable signal to the factory JBL subwoofer in a Tundra Crewmax. Swapped out the HU and wanted to be able to adjust the sub level for finer tuning ability. This fit perfectly behind the passenger side seat and runs cool and provides plenty of power to the factory sub.

By MPdesignsAV on April 13, 2015 Checkmark Icon Verified purchase

25

found this helpful.

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