Your cart
Contact us
Close contact box
Connect ID #
945 259 531 4
Connect ID #
945 259 531 4
All finished with your chat session?

We’ll email you a transcript of this conversation for your records.

All of our representatives are
currently chatting with other customers.

Please enter your name.  
Please enter a valid email address. Why is this required?

For Tech Support, call 1-888-292-2575

Thank you, !
Our conversation will be emailed to
Chat Advisor Image

Your Advisor,

More about me
Please enter a question  
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  

Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

JL Audio MX500/1

Compact marine/powersports mono amplifier — 500 watts RMS x 1 at 2 ohms

Item # 13698407

There's almost nothing cooler than bringing the beats while you're out tearing it up off road or on the water.

There's almost nothing cooler than bringing the beats while you're out tearing it up off road or on the water.

California customers:
Please click here for your Proposition 65 warning.

Item # 13698407

Ships free today

In stock

60-day returns

If you don't love it, send it back.

Need an expert?

Our Advisors know their stuff and love to help.

Hands-on research

We double check the details on each item.

About the JL Audio MX500/1

Power your sub on water or land

There's almost nothing cooler than bringing the beats while you're out tearing it up off road or on the water. JL Audio's MX500/1 compact mono amplifier can send up to 500 watts RMS to your sub so you'll enjoy your music's thunderous power over all the noise of you having fun.
JL Audio Built In USA

Power your sub on water or land

There's almost nothing cooler than bringing the beats while you're out tearing it up off road or on the water. JL Audio's MX500/1 compact mono amplifier can send up to 500 watts RMS to your sub so you'll enjoy your music's thunderous power over all the noise of you having fun.


The MX500/1 comes equipped to overcome the dangers of weather, dirt, and corrosion, thanks to a tough aluminum chassis and gasketed control and connection covers. And you won't have to worry about getting caught in the rain — this amp carries a full IPX7 rating against water intrusion, so it'll play on through a storm. (You can spray it, but you can't dunk it.)

Compact technology

JL Audio's NexD™ Class D amp technology delivers power efficiently and with low distortion. You'll get remarkable sound quality from an amp that fits into the kind of tight spots often found in marine applications. It's also ideal for your motorcycle, ATV, golf cart, tractor, or any other vehicle using a 12-volt charging system.

JL Audio MX500/1

Controls for the MX500/1 are on the underside protected by a sealed cover.

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


Product highlights:

  • marine/powersports mono amplifier
  • 300 watts RMS x 1 at 4 ohms (500 watts RMS x 1 at 2 ohms)
  • variable low-pass filter (40-400 Hz, 24 dB/octave)
  • variable subsonic filter (20-40 Hz, 12 dB/octave)
  • bass boost (0-12 db at 43 Hz)
  • Class D amplifier design with NextD™ switching amp technology
  • IPX7 water-resistance rating
  • corrosion-resistant cast aluminum chassis
Other Features:
  • preamp and speaker-level inputs (speaker wire to RCA adapter required for speaker-level input)
  • 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
  • 9-3/8"W x 1-13/16"H x 4-9/16"D
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # 98407

What's in the box:

  • Mono marine amplifier with 12" power/signal pigtails
  • 4 Self-tapping screws (1" length)

Customer reviews

Loading reviews...

JL Audio MX500/1 reviews

Average review:

17 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee review (What's this?)



Crutchfield response

<< >>

Product Research



Mono Class D Amplifier: The JL Audio MX500/1 compact mono Class D marine amplifier is designed for the harsh marine environment. Its IPX7 water-resistance rating also makes it ideal for motorcycles, ATVs, or other utility vehicles. It can be used to drive subwoofers.

NexD Switching Technology: The MX500/1 employs an advanced, high-speed Class D switching design called NexD that allows the amp to produce serious power without overtaxing the battery and charging system.

Amplifier Ratings:

  • Rated Continuous (RMS) Power @ 14.4 V (<1% THD+N):
    • 300 watts RMS x 1 @ 4 Ω
    • 400 watts RMS x 1 @ 3 Ω
    • 500 watts RMS x 1 @ 2 Ω
  • Rated Continuous (RMS) Power @ 12.5V (<1% THD+N):
    • 250 watts RMS x 1 @ 4 Ω
    • 300 watts RMS x 1 @ 3 Ω
    • 400 watts RMS x 1 @ 2 Ω

Input Section: The MX500/1's input section accepts a wide range of input voltage levels. It can accept a line-level signal from 250 mV to 4 Volts, or speaker-level signals from 580 mV to 14 Volts. The amp is equipped with an Input Voltage switch that allows you to choose a Low or High level input signal.

Protection Circuitry: The MX500/1's protection circuitry automatically shuts the amplifier down if thermal limits are exceeded, a short-circuit is detected in the speaker wiring, or if current levels are too high. The green Power LED and red Protect LED will indicate conditions by its on/off or flashing status.


Control Panel: The amplifier's control panel is located on the bottom of the amplifier. The removable cover is held in place by 4 Phillips-head screws, and features a rubber gasket that seals out moisture and dust. You will need a small flat screwdriver to set the three switches and four rotary dials. The following controls are located in the Control Panel:

  • Input Voltage: You can select the type of input signal being used: High Level (speaker) or Low Level (line).
  • Input Sensitivity: The Input Sensitivity Control is a rotary dial that lets you match your source unit's output voltage to the input stage of the amplifier for maximum clean output.
  • Output Polarity: The Output Polarity switch lets you choose between normal speaker polarity (0 deg) or reversed polarity (180 deg).
  • LP Filter Switch: The amp is equipped with a Low Pass crossover that can be set to On or Off.
  • LP Filter Frequency: When the LP Filter is turned on, you can set the cutoff frequency on the rotary dial. The filter is continuously variable from 40Hz to 400Hz, with detents at 80Hz and 130 Hz. The LP filter has a slope of 24dB/Octave.
  • Infrasonic Filter: The infrasonic filter eliminates super-low frequencies which cannot be cleanly reproduced by the subwoofer, rob amplifier power, and cause distortion. This variable high-pass filter is adjustable from 20Hz to 40Hz, with detents at 30Hz and 35Hz. It has a slope of 12dB/octave. The infrasonic filter is non-defeatable.

Remote Bass Controller: The amplifier's subwoofer output level can be controlled from the front the vessel/vehicle using an optional remote level controller. For marine installations, or for installations that may be exposed to moisture, the optional M-RBC-1 is recommended. For standard installations (not exposed to moisture), the RBC-1 can be used. Both controllers have a 16.5-foot cable with an RJ14 plug that matches the remote level controller jack on the amplifier.


Wiring: The MX500/1's wiring is internally connected and exits the amp through a waterproof opening. The following connections can be found, each with 12" pigtails:

  • Power: The power wire coming out of the amp is a single 8-gauge wire. JL Audio recommends a minimum of 4-gauge wiring for the power wiring. You will need to add a fuse to the power wire within 18" of the battery. A 50A fuse or circuit breaker is recommended.
  • Ground: An 8-gauge ground wire is connected to the amplifier. A minimum of 4-gauge wiring is recommended for the ground wire. You may need a ground distribution block to splice the ground wires together.
  • Remote Turn-On: A 16-gauge remote turn-on wire is connected to the amp. You should connect the turn-on lead to the remote turn-on output of your source unit. If the source unit does not have a dedicated remote turn-on output, the amp's turn-on lead can be connected to +12V via a switch that derives power from an ignition-switched circuit.     Note: The amp does not have an audio signal-sensing turn-on, so the remote turn-on lead must be connected.
  • Remote Bass Controller: A female RJ14 jack is provided for connecting a remote level controller, such as the M-RBC-1 or RBC-1. The jack has a waterproof cap when not in use.
  • Signal Inputs: Two female RCA jacks are provided for the left and right input signals. If the source unit does not offer preamp level outputs, you can splice the speaker output wires to a pair of RCA plugs, or use the JL Audio XD-CLRAIC2-SW RCA-to-Speaker Wire Adapter. The amp's RCA connectors have waterproof caps.
  • Speaker Outputs: Positive and negative 16-gauge speaker wires are provided on the amplifier for connecting your speakers. The impedance of the connected speaker(s) should be 2 ohms or higher.

Loading accessories...

Customer Q&A

2 questions already asked

4 gauge power and ground wires are recommended but the wires from the amp are only 8 gauge, whats the best way to join such differently sized wires? And why would they make the amp wire so much small than the wire the want you to use?
[ Big 'uns  Mar 27, 2021 ]
1 answer
If you are only running this one amp, and the distance is less than 16ft from battery, I would just run a quality 8 gauge. If you want to run 4 gauge, use a distribution block to down size the wire
[ BRADLEY  Mar 27, 2021 ]
Does the wire harness that plugs into the amp included?
[ Bruce  Mar 23, 2021 ]
5 answers
Yes it is.
[ joshua  Mar 24, 2021 ]
The wiring in/out of the AMP is the power, line-in (you will need your own RCA), toggle switch, and speaker out (your own wiring). Wiring to the battery is not included.
[ Christopher  Mar 23, 2021 ]
[ JAMES  Mar 23, 2021 ]
Yes. It's waterproof as well.
[ NEIL  Mar 23, 2021 ]
All connections/harnesss are built into the amp. You still need an amp install kit (power, ground, remote and RCA's)
[ GREG  Mar 23, 2021 ]

Loading articles...

Compare the sound