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JL Audio XD600/1v2

Mono subwoofer amplifier — 600 watts RMS x 1 at 2 ohms

Item # 13698604

JL Audio's XD600/1v2 amp packs a wallop far beyond what you'd expect from something so small.

Find what Fits your vehicle

JL Audio's XD600/1v2 amp packs a wallop far beyond what you'd expect from something so small.

Item # 13698604

In stock

About the JL Audio XD600/1v2

Power your sub

JL Audio's XD600/1v2 amp packs a wallop far beyond what you'd expect from something so small. This amp plays bass with true fidelity and impressive impact, without straining your car's electrical system. A cast alloy heatsink and an advanced cooling system keep this amp at optimal temperature, eliminating thermal shut-downs so your music keeps going strong without interruption.

Power your sub

JL Audio XD600/1v2

Compact design applies to internal components too.

JL Audio's XD600/1v2 amp packs a wallop far beyond what you'd expect from something so small. This amp plays bass with true fidelity and impressive impact, without straining your car's electrical system. A cast alloy heatsink and an advanced cooling system keep this amp at optimal temperature, eliminating thermal shut-downs so your music keeps going strong without interruption.

The XD600/1v2 mono amp delivers up to 600 watts RMS to your subwoofer, and its low-pass filter features a choice of slopes for better control over the character of your bass. A subsonic filter allows you to tighten up your system's kick and gets rid of any inaudible, low-frequency information that could detract from your sub's performance.

Works with almost any vehicle's system

"Differential-balanced" inputs keep the signals clear of outside noise, and allow you to connect this amp to just about any in-dash stereo, even a factory radio. The speaker-level inputs feature two auto turn-on modes so you can readily incorporate this amp into a factory system — no need for RCA connections or a remote turn-on lead. An optional wired remote lets you tweak the volume of your sub from the front seat.

JL Audio XD600/1v2

                                     XD600/1v2 connection panel

Confused about impedance? Check out our article on matching subs and amps.


Product highlights:

  • mono subwoofer amplifer
  • 400 watts RMS x 1 at 4 ohms (600 watts RMS x 1 at 2 ohms)
  • variable low-pass filter (50-500 Hz, 12 or 24 dB/octave)
  • switchable subsonic filter (30 Hz, 24 dB/oct)
  • optional wired remote level controller
  • Class D amplifier design with NextD™ switching amp technology
  • differential-balanced inputs eliminate noise coming from your vehicle's electrical system
  • Advanced Rollback Protection System prevents thermal shut-down
Connection Features
  • preamp inputs and outputs
  • speaker-level inputs (speaker wire to RCA adapter required for speaker-level input)
  • high-level inputs — up to 8 volts RMS (about 16 watts)
  • DC offset or signal sensing auto turn-on eliminates need for remote lead
  • 4-gauge power and ground leads and a 50-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 50-amp in-line fuse between the distribution block and the amplifier is recommended
  • 8-9/16"W x 2"H x 7-1/8"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # 98604

What's in the box:

  • Mono amplifier
  • Self-adhesive JL Audio badge
  • 2.5mm Allen wrench
  • Owner's Manual

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Product Research



XDv2 Series: The JL Audio XDv2 amplifiers feature big audio performance from a small footprint. With advanced NexD switching technologies, the XDv2 amps exceed 80% efficiency, running cooler than most other amplifiers. The Advanced Thermal Rollback System gives you increased reliability and better audio performance by virtually eliminating thermal shut-down. Because the XDv2 amps employ smaller cast alloy heat sinks, they can be installed in smaller spaces. XDv2 amplifiers feature a black powder-coat finish with a brushed aluminum cover for the controls.

Monoblock Class-D Subwoofer Amplifier: The XD600/1v2 is a Class-D monoblock amplifier, designed specifically for driving subwoofers. It has two positive and two negative speaker output connections to make it easier to connect multiple subwoofers. The terminals are wired in parallel internally. The amplifier is stable down to 2 ohms.

Amplifier Rating: The XD600/1v2 is rated at 400 Watts RMS x 1 channel at 4-ohms (20 Hz to 20 kHz), Signal-to-Noise Ratio of >87 dB, 1% THD, @14.4 Volts. At 3 ohms, the rated power is 500 Watts RMS, and at 2 ohms, it outputs 600 Watts RMS.

Advanced Rollback Protection: The XDv2-Series amplifiers employ advanced thermal and low-impedance protection to virtually eliminate annoying amplifier shut-down events. Should any XDv2-Series amplifier ever overheat, its intelligent, unregulated power supply reacts by limiting available peak voltage until the amplifier returns to a safe temperature range. Likewise, if an impedance lower than optimal for the amplifier is present at the outputs, the XDv2 amplifier will roll back peak voltage to protect itself without shutting down.

Differential-Balanced Inputs: The XD600/1v2 features differential-balanced input architecture to effectively control noise and ensure compatibility with a wide variety of source units, including many OEM systems. Without resorting to line output converters, you can directly connect most OEM source units to the amplifier without creating any noise or compatibility issues. Unlike conventional single-ended inputs, the differential-balanced design does not connect one side of the audio signal to chassis ground. This eliminates any voltage sensitivity between one input terminal and ground and greatly reduces the incidence of alternator whine in a typical car audio installation.

Note: You will need a Speaker Wire to RCA adapter (sold separately) to connect this amplifier to your head unit via speaker level.

Protection Circuitry With Status Indicator Lights: There is a single multi-color LED on the top panel of the amplifier to indicate the amplifier's operating status.

  • Flashing Green: When the LED is flashing green, the amplifier is powering up and audio output is muted.
  • Constant Green: This LED lights green to indicate that the amplifier is turned on and operating normally.
  • Constant Red: This Red LED lights to indicate that the amplifier has exceeded its safe operating temperature, putting the amplifier into a self-protection mode, which reduces the power output of the amplifier. The red light will shut off and the amplifier will return to normal, full-power operating mode if the heat sink temperature drops back to a safe level.
  • Constant Amber (Yellow): The Amber (Yellow) LED light indicates that an over-current condition has occurred and is accompanied by a muting of the amplifier's output. Over-current condition can be caused by a speaker impedance lower than the optimum load impedance range for the amplifier or a short-circuit in the speaker wiring.
  • LED Off: The only condition that will shut down an undamaged XD600/1v2 completely is if battery voltage or remote turn-on voltage drops below 10-volts. The amplifier will turn back on when voltage climbs back above 11-volts.

Cooling System: The outer shell of the JL Audio amplifier is designed to remove heat from the amplifier circuitry. For optimum cooling performance, this outer shell should be exposed to as large a volume of air as possible.  Enclosing the amplifier in a small, poorly ventilated chamber can lead to excessive heat build-up and degraded performance.


Control Panel Cover: The XD600/1v2 features a brushed aluminum Control Panel Security Cover which protects and hides the amplifier's controls. When installed, the cover ensures that the amplifier's settings are not accidentally changed while creating a clean aesthetic look for the amplifier and your installation. The control panel security cover is pre-installed at the factory and must be temporarily removed to access the amplifier's controls. The security cover is secured by two 2.5mm hex-head screws.

Simplified Gain Setting: This XDv2 Series amplifier makes setting the gain level of the amp via the input sensitivity control very simple. All you need is Digital AC Voltmeter and a CD Test Disc with a sine-wave test-tone recorded at 0 dB reference level in the frequency range to be amplified for that set of channels (50 Hz for subwoofers).

Flexible Input Section And Active Crossover Network: The XD600/1v2 amplifier provides a flexible input section and a comprehensive crossover network to fine tune your system effectively and accurately:

  • Infrasonic Filter: The amp features an Infrasonic Filter, sometimes referred to as a Subsonic Filter, which conserves amplifier power and protects subwoofers by filtering out unwanted, inaudible sub-bass frequencies. This 24 dB/octave, 30 Hz Infrasonic Filter can be turned on or off by way of a two-way switch.
  • Low-pass filter: You can switch between the 12dB/octave Butterworth or 24dB/octave Linkwitz-Riley crossovers, or bypass the low-pass filter if you have an external active crossover in the system.
  • Filter Frequency: The filter frequency can be selected using the rotary control. The control has forty detented positions for selecting the precise frequency you desire. There are markings at 50Hz, 60Hz, 80Hz, 120Hz, 200Hz, and 500Hz, plus there is a chart in the Owner's Manual with the exact cutoff frequency for each detent.

Turn-on Options: The Turn-on Mode Switch lets you choose the method for turning the amplifier on and off:

  • +12V Remote Turn-on Lead: The preferred method for turning the amplifier on and off is by running a turn-on lead from the source unit and connecting it to the Remote terminal. When +12V is present at the terminal, the amplifier will turn on. When the +12V is turned off, the amplifier will shut off. The set screw connector on the Remote terminal will accept 18 AWG to 12 AWG wire.
  • DC Offset-Sensing: The amplifier will turn on and off when the presence of a very small DC signal (or offset) is detected on the amp's RCA left channel input. The amplifier will turn off when this DC Offset is no longer present. This method is designed for high-level (speaker-level) input signals, not for low-level (line-level) signals.
  • Signal-Sensing: The amplifier will turn on and off by detecting the presence of a full-range audio signal at the left-channel input. The amp will turn off approximately 30 seconds after the audio signal is no longer detected. This method is designed for use with high-level (speaker-level) input signals and not for low-level (preamp level) signals.
Note: When the DC Offset or Signal Sensing turn-on methods are being used, the amp's Remote terminal can be used as a remote turn-on output for other amplifiers or accessories in the system.


Power/Ground/Turn-On Terminals: This JL Audio XDv2 amplifier features set screw clamp terminals for the power, ground, and remote turn-on connections. A 2.5mm hex-wrench is supplied for tightening or loosening the set screws.

  • Power and Ground: The amplifier's set screw clamp Power and Ground connections are designed to accept 4 AWG power wire.
  • Remote Turn-On: The amplifier's set screw clamp turn-on lead will accept 18 to 12 AWG wire.
Note: The Amplifier is not equipped with a fuse. An external 50-amp AFS, AGU, or MAXI fuse must be installed on the power wire. If a wiring kit is used which includes a fuse with a value other than 50-amps, the original should be replaced with a 50-amp fuse.

Speaker Output Terminals: The JL Audio XD600/1v2 features four set screw clamp speaker terminals for an easy parallel subwoofer connection. The terminals will accept 16 to 8 AWG speaker wire.

Preamp Inputs: The amplifier features one set of differential-balanced RCA jack inputs with an Input Voltage switch. For preamp level signals, the switch should be set to LOW. For speaker level signals, the switch should be set to HIGH. The rotary Input Sensitivity gain control can be set the amp to the specific signal source that is feeding it. The amplifier's input voltage range is 200mV-2V (LOW) and 800mV-8V (HIGH).

Preamp Outputs: The XD600/1v2 incorporates a buffered pass-through preamp output section, so that additional amplifiers can be easily added to the system. The preamp output signal is not affected by the amp's Low-Pass Filter. If the Input Voltage switch is in the LOW position, the level of the Preouts matches the input signal strength. When the Input Voltage switch is in the HIGH position, the level of the input signal is attenuated -12dB to produce a line-level signal at the Preouts.

Remote Level Control: The amplifier features a standard RJ-14 telephone connector for adding the optional wired HD-RLC Remote Level Control (sold separately). The Remote Level Control lets you control the volume of the XD600/1v2 from the driver's seat.

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Customer Q&A

14 questions already asked

In using a "fuse tap" to turn the amp on instead of the remote connection from the head unit. What size fuse should be used at the tap when a 30A ATO is being tapped into?
[ Luke  Jun 15, 2021 ]
1 answer
Fuse taps require one fuse to be the original size on the circuit and the new accessory part to have a fuse less than the original; in this case, less than 30A to otherwise the current draw could overwhelm the original circuit and blow its fuse.
[ Paul  Jun 29, 2021 ]  Staff
Would it's amp work with JL12w6v3 sub?
[ Juan  Apr 26, 2021 ]
2 answers
It works great with one 12w6v3
[ Gary  Apr 26, 2021 ]
Works perfect, I use it on mine.
[ Adam  Apr 26, 2021 ]
Would the JL Audio XD600/1v2 produce to much power for a single JL W0V3-10? Thinking of adding this to my 2020 Ram.
[ Kenneth Q  Mar 10, 2021 ]
3 answers
Yes I have 2 12 inch jl audio subs and I can only have the amp 3/4 the way turned up. Great amp tho
[ Brandon  Mar 10, 2021 ]
The amp is rated 400 watts @4ohms, the sub you are using is 4ohms. If your gains are set at a proper level I would trust it personally.
[ Gary  Mar 10, 2021 ]
Not at all. The truth is you don't want to use an amp at 100% capacity. Can you blow the sub by turning it up too much? Sure. But equally you can destroy your sub by clipping the signal maxing out the amp or signal. Having more than enough power gives you headroom or the ability for the amp to handle any music with ease. I've had amps paired watt to watt, when cranking it, I found it more disappointing. Take a look at distortion and when amps are pushed too hard. Having excess "juice" or power won't hurt anything. Just keep the gain down. Result is audible and I think you'll enjoy it.
[ Adam  Mar 10, 2021 ]
I have two xd600/1v2 amps each running one kenwood single 4-ohm 12" subwoofer in a truck box under the rear seat of my Silverado. Didn't tell much difference when I went from one amp to two. Is that because the resistance doubled now that the subs are not wired in parallel? What's the best configuration and tuning for me? New to this please help.
[ Jared  Jun 15, 2020 ]
1 answer
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
[ Krissy  Jun 23, 2020 ]  Staff
Will I need an additional battery for this amp in a Hyundai Genesis coupe that has a stock 150 amp alternator?
[ Chuck  Oct 08, 2019 ]
3 answers
Works fine with the stock 210Amp alternator in my M235i.
[ Robert  Oct 23, 2019 ]
It depends on how many amplifiers you are running if you are just running this for a sub woofer and nothing else. It would run fine off the single battery. Now if you run multiple amplifiers then you can see how they run off the stock battery and alternator and upgrade as needed
[ THOMAS A  Oct 23, 2019 ]
Not sure, but I put this into my stock 2019 buick regal and havent had an issue. No lights dimming, no problems.
[ Troy  Oct 23, 2019 ]
If using JL Audio XD-CLRAIC2-SW to connect high level inputs to the amp, do i need to use both Left and Right speakers to connect on the amps L and R? Or will one suffice? Either the left or a right speaker input?
[ Servando  Sep 24, 2019 ]
2 answers
Marc nailed it! The XD600/1v2 amplifier's input section automatically sums stereo signals to mono for the internal amplifier section making it so you don't need to use both RCA inputs.
[ Paul  Oct 12, 2019 ]  Staff
You need to connect both R/L to have stereo sound. All music from the 70s to today's recording are recorded with stereo L/R to include base. You would only get half the sound if you did just one channel depending on the recording. An example would be if they did the main singer on the left channel and the backup singers on the right channel, you would hear only one or the other. You can get away with your suggested option with base. If you using it for base you can bridge it with just one high level input or if you just don't care about stereo sound you can use it the same way for your front/back speakers with one high level input. One input is for bridged mode. Don't expect one line in and two lines out. So one channel in and one channel out. Hope that makes sense
[ Marc  Oct 11, 2019 ]
If connecting to RCA inputs from an LC2i do I put input voltage switch on high or low? I think its high because the LC2i puts out 9-13V and the amp guide says high is 800mV to 8V.
[ MattGuy  Nov 02, 2018 ]
1 answer
Mine is on high. Right or wrong, I don't know, but I'm sure when I set it up 2 years ago I did the research to justify setting it to high. I'm using this amp and the LC2i with Kicker CompRT 43CWRT102 10" Dual 2-ohm Component Subwoofer. Good luck!
[ Hunter  Nov 10, 2018 ]
Would this be an appropriate amp for a JL 8w7? Also I currently have an RD900/5. The rms for the sub is about 300w. I plan on getting another 8W7 and two of the XD600 to power each of the 8W7's. Does that sound like a good plan? Thanks in advance!
[ Geoff  Feb 06, 2018 ]
1 answer
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system.
[ Krissy  Feb 10, 2018 ]  Staff
Will this amp fit under the the seat of a 2016 4Runner? Looking for mounting locations out of plain sight.
[ william  Dec 27, 2016 ]
3 answers
i think will fit easily under the seat. what you can do make a box 8-9/16"W x 2"H x 7-1/8"D which is the size of the amp.
[ edison  Dec 28, 2016 ]
Not sure but it fits under seat on Tacoma I have a 250/1 under seat right now witch is larger so I'd think you would be fine
[ Guest  Dec 27, 2016 ]
I know it fits under the seat of a 2015 Nissan Frontier.
[ John  Dec 27, 2016 ]
Will jl audio xd600/1v2 amp power my 2 jl 10tw3-d4s?
[ Booming nightly  Aug 06, 2016 ]
4 answers
I am sure it can push them. I have my XD 600 pushing my W6 12.
[ HASAND  Aug 08, 2016 ]
Google that make and find out the reccoemended watts. Id say around 800, so maybe not as efficient as you'd like it
[ Candy  Aug 07, 2016 ]
It gives my 10w6 v3 all it wants. I'm sure it'll pound the stuffing out of a couple w3s. I love this amp! The sound quality is amazing as expected from JL audio,And it packs a a huge punch!
[ HENRY  Aug 06, 2016 ]
No get a Rockford
[ Matthew  Aug 06, 2016 ]
Will jl audio xd600/1v2 amp power my single rockford fosgate p3d4-12 running at 2 ohms without getting too hot?
[ Adam  Nov 01, 2015 ]
1 answer
Absolutely. The JL XD600/1v2 is a Class D model and highly efficient as a result. The 600 watts RMS output (at 2 ohms) is a great match for your Rockford Fosgate subwoofer.
[ Ryan  Nov 04, 2015 ]  Staff
Do these JL audio amps come with a birth sheet? A test of the wattage performance like Alpine Rockford Fosgate and other amps I've have owned.
[ Cordie  Oct 12, 2015 ]
1 answer
Short answer is no. JL audio subs and amps are far superior to your run of the mill fosgate, alpine, and other sub par audio equipment. I have had the JL audio xd600/1v2 for about a year and would put it against any other 600w amp on the market. Hope this helps.
[ HENRY  Oct 13, 2015 ]
Which JL audio amp is better quality the HD or XD?
[ Dennis  May 17, 2015 ]
1 answer
Thanks for your question. For information on comparing two or more models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget.
[ Krissy  May 17, 2015 ]  Staff
Could this amp be used with 2 jl audio 10w1v3-4 subwoofers?
[ Bobby  Mar 25, 2015 ]
6 answers
probably,it may be best to consult professional.
[ KAREN F  Mar 26, 2015 ]
Yes, I run this amp to power those exact subs. They sound great.
[ Danny  Mar 26, 2015 ]
I Would recommend asking crutchfield team for best option but I would recommend a 2 channel amp since your running 2 sub's ..this is a mono amp I'm only running one sub with it
[ Travis  Mar 25, 2015 ]
I Would ask crutchfield for best option ..but I would recommend a 2 channel amp since your running 2 speakers this is a mono amp I'm inky running one sub with it
[ Travis  Mar 25, 2015 ]
IT runs my 2 JL 10w3's at 4 ohm just fine
[ Ryan  Mar 25, 2015 ]
Yes and they will hit hard. I think he would have tune that amp down.
[ HASAND  Mar 25, 2015 ]

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