Open Box, Great - JL Audio JX250/1 (JX2501) 250W RMS, 1-Chan Class A/B JX Amplifier

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Product highlights

JX Series Monoblock Amplifier • Class AB • 175W @ 4 ohm • 210W @ 3 ohm • 250W @ 2 ohm • Variable Bass Boost (0 to +12 dB) • High & Low Level Inputs • Adjustable Input Sensitivity • Low Pass Filter

Learn more about the LS-jx2501-OB

Product Highlights

Description

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

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

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

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:

Item Condition: Like New, Open Box, Complete
Not Refurbished

JX Series Monoblock Class D Subwoofer Amplifier
RMS Power Rating (14.4V):

4 ohm: 175 watts x 1 chan.
3 ohm: 210 watts x 1 chan.
2 ohm: 250 watts x 1 chan.

RMS Power Rating (12.5V):

4 ohm: 130 watts x 1 chan.
3 ohm: 170 watts x 1 chan.
2 ohm: 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 ohm: >160 @ 4 ohm
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
90 Day Sonic Electronix Warranty

Check out the JL Audio JX250/1 Owner's Manual

Specifications & Details

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms

175 watts x 1 channel

RMS Power @ 2 ohms

250 watts x 1 channel

RMS Power @ 1 ohm

Not Stable

Amplifier Specifications

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 ohm

Minimum Impedance Bridged

Not Bridgeable

THD at Rated RMS Power

Speaker Level Inputs

Yes

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)

JL Audio RBC-1

Warranty and Return Policy

Parts Warranty Duration

90 days

Labor Warranty Duration

90 days

Warranty Provider

Sonic Electronix

Customer Ratings & Reviews

JL Audio JX250/1 (Open Box) thumbnail image

Overall rating distribution

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

Filter by Star Rating

Show only Verified Purchases

By feature average rating

Durability		4.2
Value		3.7
Features		3.9
Design		4.4
Usability		4.5

Customer Reviews

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Still don't understand JL's value

The following review is for JX250/1, which is a part of the bundle you are viewing.

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

56 found this helpful

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awesome!

The following review is for JX250/1, which is a part of the bundle you are viewing.

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

52 found this helpful

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Not bad

The following review is for JX250/1, which is a part of the bundle you are viewing.

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

52 found this helpful

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andrew

The following review is for JX250/1, which is a part of the bundle you are viewing.

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

49 found this helpful

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Compact and solid performance.

The following review is for JX250/1, which is a part of the bundle you are viewing.

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

46 found this helpful

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Great Amp

The following review is for JX250/1, which is a part of the bundle you are viewing.

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

47 found this helpful

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Add-ons

Belva BAK82

Complete 8 Gauge Amplifier Wiring Kit with 2-Channel RCA Interconnects

(97)

$24.99

List price $49.99

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JL Audio JX250/1 (Open Box)

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This item has been discontinued

Product Highlights

Description

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

Integration Flexibility

Low-Pass Active Filter

General Features:

Specifications & Details

Item Details

Product and How-to Videos

Customer Ratings & Reviews

Customer Reviews

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