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JL Audio XD600/1

600W, Single-Channel Class D XD Series Subwoofer Monoblock Car Amplifier

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List price $449.95

$359.95

with warranty

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Quality, Efficiency, and Convenience with JL Audio XD Amplifiers

JL Audio's XD600/1 monoblock XD series amplifier encompasses high quality at an affordable price. When JL Audio sets out to make an affordable amplifier the one thing that you can bet they will not do is compromise on quality and performance. XD amplifiers feature NexD Class D Technology, that reduces distortion and increases efficiency. The use of an Advanced Rollback Protection system will allow the XD amplifiers to maintain both thermal and low-impedance protection by either limiting available peak voltage when overheating or rolling back peak voltage when low impedance is presented at the outputs. In order to minimize engine whine or alternator noise, XD amplifiers feature differential-balanced inputs that eliminate voltage sensitivity between one input terminal and ground thus reducing the occurrence of interference. Apart from all these great technologies, XD amplifiers also feature a relatively small chassis, making them easily mountable in any vehicle without extraneous hassle. When looking for a space-saving amplifier loaded with the latest technologies and unsurpassed quality and performance, then look no further than JL Audio's XD series car amplifiers.

General Features

  • XD Series Monoblock Class D Car Amplifier
  • RMS Power Rating (14.4V):
    • 4 ohms: 400 watts x 1 chan.
    • 2 ohms: 600 watts x 1 chan.
  • RMS Power Rating (12.5V):
    • 4 ohms: 300 watts x 1 chan.
    • 2 ohms: 500 watts x 1 chan.
  • Unregulated MOSFET switching type power supply
  • NexD Ultra-High Speed Class D topology
  • Wired JL Audio HD-RLC remote level control sold separately
  • LED power (green) and protect (red/yellow) indicators
  • State-of-the-art microelectronic components
  • Mono channel operation
  • Advanced Thermal Rollback System completely eliminates annoying thermal shut-down events
  • Studio-grade signal processing with fully variable crossover filters
  • Extruded aluminum alloy system setting security cover
  • Total amplifier efficiencies exceeding 80%
  • Noise-killing, highly flexible differential-balanced inputs
  • Preamp RCA outputs to daisy chain multiple amps
  • Defeatable low-pass and infrasonic crossover filters
  • Dual speaker terminals simplify speaker installation
  • 3-Way System Protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty compact unitary cast alloy heat sink for extreme heat dissipation
  • Silver-plated RCA level inputs
  • Silver-plated screw terminals
  • Input sensitivity:
    • Level: 100mV-4V
  • Variable low-pass filter (50-500 Hz, 12 dB/octave Butterworth or 24 dB/octave Linkwitz-Riley)
  • Infrasonic Filter (30 Hz, 24dB/octave Butterworth)
  • Damping factor: >1,000 @ 4 ohms / 50Hz, >500 @ 2 ohms / 50Hz
  • Frequency response: 7-500 Hz
  • Dimensions: 8-1/2"L x 7-1/16"W x 2-1/16"H
  • 4-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • 1-year Sonic Electronix warranty

Product History:

JL Audio XD600/1V2 thumbnail
(newest, current model)
JL Audio XD600/1 thumbnail
(previous model, replaced by JL Audio XD600/1V2)

Power Specifications - Subwoofer Channel

RMS Power @ 4 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
400 watts x 1 channels
RMS Power @ 2 ohms
The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far. If the final impedance of your speaker(s) or subwoofer(s) equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
600 watts x 1 channels

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
XD (JL Audio)
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

D
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
1 - Mono
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

600 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Not Bridgeable
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
1.0%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
No
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
1 pair
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-pass (LP)
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 500 Hz
Subsonic Filter
Allows you to block (filter) ultra-low frequencies that your subs cannot reproduce.
30 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
87 dB
Channel Separation
Also referred to as crosstalk. The amount of interference on one stereo channel caused by the leaking of the other stereo channel. The higher the rating in decibels (dB), the better the Channel Separation.
67 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Optional (Accessory required and sold separately)
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
50A x 1 
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

No

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
62%
4 Star
31%
3 Star
0%
2 Star
8%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.4
Features
4.3
Design
4.7
Usability
4.5

Markel

Mabelvale, AR

Overall
Durability
Value
Features
Design
Usability

Great Amp

June 3, 2014

Had it hooked up to an JL 13 Thin mount and what a pair this amp i must say packs a mean punch for the size of it you wouldnt expect great BUY

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Max

Mcallen, TX

Overall
Durability
Value
Features
Design
Usability

Amazing Amp

March 25, 2014

I am impressed with the power of this amp, I had two amplifiers rockford fosgate for focal's access and Poliglass, also for a couple of subwoofers jl Audio 12W1, and really did not know what kind of brands buy it. I decided to buy this amp but I was afraid if that brand was I'm looking for. I have a surprise, it's pretty good and quite practical, and has a power that left me very satisfied

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Dan

Lindenwold,NJ

Overall
Durability
Value
Features
Design
Usability

Great Item, Great Value!

September 9, 2013

Great Item ! does what it is used for. i would buy another if needed.

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Scoots

Grand Forks, ND

Overall
Durability
Value
Features
Design
Usability

Great power in a little package!

August 27, 2013

For such a small amp it has plenty of power and makes my jl 10W6v2-D4 sounds very loud, tight and clear while staying pretty cool at the same time.

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Donnie E.

Santa Clarita, CA

Overall
Durability
Value
Features
Design
Usability

Worth every penny

March 4, 2013

Don't be discouraged by the cost per watt with this amp. It truly is worth every penny. Rated at 600 watts this amp puts out more clean power than too many other amps on the market rated at 2-3 times the output. This amp is very efficient meaning a smaller drain on your electrical system. It is also extremely small and the controls and filters are great. In regards to price for performance, this amp is hard to beat.

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McK25

Los Angeles, CA

Overall
Durability
Value
Features
Design
Usability

Out of this world!!

August 13, 2012

Extremely underated, puts out amazing power for such a small price and small package. Way more power than needed. Also easy to adjust, great style, stays cool, and smooth power all around. Thanks Sonic for recommending!

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subchild420

chauvin la

Overall
Durability
Value
Features
Design
Usability

jl 600/1

July 23, 2012

do not be fooled by the size of this amp it has blow my rockford fosgate p3 15 easily

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Zach

Australia

Overall
Durability
Value
Features
Design
Usability

JL XD600/1

July 1, 2012

This product is great for discrete, quality installations. Having used this product for 6 months I havent had it present and problems to me. If you're considering this versus the alpine equivalent I would recommend saving your money and purchasing the JL.

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Ben

Chanute, KS

Overall
Durability
Value
Features
Design
Usability

Good Amp

May 20, 2012

Very good unit in my opinion. I'm not a SPL guy, so I'm not sure what "cold" means. I previously owned a RF Power T500-1bd. It was a good sounding unit, but this amp sounds just as good in my opinion. Plus, JL Audio includes detents on all their adjustments, which surpasses any RF amp I've ever used as far as tunablity goes. Long story short, both amps are good, but if I where to recommend one over the other, I'd take this one. They cost about the same.

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Billy

Honolulu, Hawaii

Overall
Durability
Value
Features
Design
Usability

Awesome amp!!!!

April 11, 2011

I definitely would recommend the xd600/1! It may be a little pricey but it powers my two 10 inch subs with ease. Its small footprint also helps to make installation in any location a breeze.

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Efro

San Jose CA

Overall
Durability
Value
Features
Design
Usability

JL AUDIO XD600/1 AWSOME!

September 18, 2010

Just finished installing this in my car. This amplifier is so TINY but yet so powerful! My JL W6v2-D4 never sounded so good! Sonic Electronix delivered fast!

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angel

danbury, CT

Overall
Durability
Value
Features
Design
Usability

The little amp that could.

June 10, 2012

This amp is ideal for intalations whereby space is an issue or can not be compromised. With this amp I replaced an old alpine Amp that was also in the class of small powerful amps. I made a switch and noticed and inmense difference. It was so intense, that I had to dynamat the car panels. I was powering a JL w3 12" on a sealed enclosure and the sound was incredible. The bass was clean and deep- for its size unparalleled. This lasted about 8 months. Unfortunately, the speaker was blown. However, the speaker lasted about 8 years under the old amp that had speaker protection. I then purchased another speaker. I tried an Alphasonic 400 series as a temporary fix. This speaker was also blown out in only 3 days. Apparently, there isn't any speaker protection built in to this device. Also of concern, is that the gain controls are not easily accessible. It is bellow a face plate on the top of the amp that is screwed in. I just dicovered this after consulting with a JL salesperson. Now, I'm in process of trying the RE Audio SEX 12 sub that is favorably reviewed by Sonic consumers. Wish me luck. I guess with proper gain control and the right combination of speakers it is a good little amp. I recommend it, with the exterior device sold separately to control it's volume.

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trevans

raleigh,nc

Overall
Durability
Value
Features
Design
Usability

Loud and small

December 12, 2010

If you are in a SPL competition this amp is great. If you are looking for good sound quality do not buy. This amp sounds cold very similar to the Alpine pdx.

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Accessory Tools and Products

Accessories added

NVX XKIT42 100% OFC True 4 Gauge Wiring Kit with RCA Cables and Speaker Wire

The reviews speak for themselves, this is awesome wire with everything you need!

Your Price $89.99

JL Audio XD-PCS4-1B 4 Gauge Wiring Kit

Get a JL Audio wiring kit to match your new JL amplifier! Don't forget the RCA's!

Your Price $119.95

Belva BAK42 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

Your Price $29.99

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $79.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $149.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

JL Audio HD-RLC

Remote Level Control for Select JL Audio Amplifiers

Your Price $34.95

StreetWires FB4

4 AWG / 4 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

Professional Installation for your Car Power Amplifier

Covers labor charges through our professional installer network.

Your Price $89.99

NVX XIV25 V-Series 2-Channel RCA Cable

16.4 ft of V-Series 2-Channel RCA Audio Premium Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $11.99

NVX XIX25 X-Series RCA Interconnect Cable

16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $26.99

NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $39.99

NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $13.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

SMD DD-1 Distortion Detector

Set the gain of an audio amplifier quickly and accurately

Your Price $149.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

AutoSound 2000 CD-102

High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.

Your Price $11.99

AutoSound 2000 CD-104

Audiophile reference series test disc for evaluation of all audio components.

Your Price $11.99

XIX2025 Strapping RCA

0.25 Meter (0.86 ft) Hyper-Flex RCA cable w/ Serpentine-Cut Nickel Plated Connectors

Your Price $12.99

Product Summary

Manufacturer

Model Number

XD600/1

UPC

699440982634

Weight

6.00lbs

Internal SKU

xd6001

Internal Product ID

26845

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: JL Audio XD600/1