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10.59 in

269 mm

6.93 in

176 mm

3.67 in

93 mm

11.20 in

285 mm

2.05 in

52 mm

CONNECTION GUIDE

600W Monoblock Class D  

Marine Subwoofer Amplifier

with

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Thank you for purchasing a JL Audio amplifier for your marine sound system.
Your amplifier has been designed and manufactured to exacting standards in order to ensure years of musical 

enjoyment in your vessel. For maximum performance, we highly recommend that you have your new amplifier installed 

by an authorized JL Audio dealer. Your authorized dealer has the training, expertise and installation equipment to ensure 

optimum performance from this product. Should you decide to install the amplifier yourself, please take the time to read 

this manual thoroughly to familiarize yourself with its installation requirements and setup procedures.
If you have any questions regarding the instructions in this manual or any aspect of your amplifier’s operation, please 

contact your authorized JL Audio dealer for assistance. If you need further assistance, please contact the JL Audio 

Technical Support Department at technical@jlaudio.com/support.

Installation Applications

 

This amplifier is designed for operation with 12 volt DC, negative-ground electrical systems. Using this product in vessels 

with positive ground and/or voltages other than 12V DC may result in damage to the product and will void the warranty. 

This product is not certified or approved for use in aircraft. 

Planning Your Installation

It is important that you take the time to read this manual thoroughly and that you plan your installation carefully. It is 

very easy to damage electrical systems in modern vessels. Never assume that you have found appropriate wires without 

consulting a reliable wiring diagram or without analyzing using proper test equipment. If you are uncomfortable or 

unfamiliar with diagrams or testing methods, please enlist the services of your authorized JL Audio dealer to perform 

the installation. Your authorized dealer has the training, expertise and installation equipment to ensure optimum 

performance from this product. The following are some considerations that you must take into account when planning 

your installation. 

Safety Considerations

•  Install your amplifier in a dry, well-ventilated location that does not interfere with factory installed systems.

•  This product should never be submerged under water or subjected to high-pressure water spray. 

•  Do not install where it will be directly exposed to the elements, or in the engine compartment, or in any areas of  

extreme heat. Areas exposed to a heater or hot air should also be avoided.

•  When selecting a mounting location, consider the orientation of the amplifier and its associated connections.  

If possible, position the amplifier vertically, with all connections pointing downward. Wiring and cables 

should be routed to direct potential condensation and moisture away from the amplifier.

•  Securely mount the amplifier so that it does not come loose in the event of a collision or sudden jolt, or as a result  

of repeated vibrations during normal operation.

•  Check before drilling to make sure that you will not be drilling into an exterior panel/hull, fuel tank, fuel line,  

wiring harness, or other vital system.

•  Do not run system wiring outside or underneath the vessel. This is an extremely dangerous practice, which can  

result in severe damage/injury.

•  Protect all system wires from sharp edges by carefully routing them, tying them down and using grommets and  

loom, where appropriate.

•  Secure all wiring as needed, using cable ties or wire clamps to protect them from moving parts and sharp edges.

1

 

 Power Connector

 The MV600/1’s “+12 VDC” and “Ground” connections are designed to accept up to 4 AWG copper wire. Note: Copper Clad 

Aluminum (CCA) wire is not recommended. Tinned copper power wire is the best choice for marine installations. 4 AWG is the 

minimum copper wire size for this amplifier. 
To connect the power, ground and remote turn-on wires to the amplifier, back out the set screws on the connector using 

the supplied hex wrenches. Strip back 3/8 inch (10 mm) of insulation from the end of each wire and insert the bare wire 

into the receptacle on the power connector plug, seating it firmly so that no bare wire is exposed. While holding each 

wire in place, tighten each set screw firmly, taking care not to strip the head of the screw. Install the power connector by 
plugging it into the amplifier’s power connector receptacle, pushing firmly.
A. 

+12 VDC: Run copper wire from the positive (+12V) battery post to the amplifier mounting location. If additional 

amplifiers are being installed, run the appropriate gauge copper wire for the combined, maximum current draw, and 

install a fused distribution block near the amplifiers. 

B. 

An appropriate fuse or ignition-protected circuit breaker (sold separately) at the main power wire(s) is vital for vessel 

safety. This must be installed within 7 inches (18 cm) of the battery post connection or in compliance with marine 

industry standards. If this is the only device connected to this main wire, use a 50 A value. Do not install the fuse or 

close the circuit breaker until the power wire has been securely connected to the amplifier and all other connections 

have been made. 

C. 

Ground: This connection should be made to the NEGATIVE battery post. Alternatively, an appropriately equipped and 

positioned DC ground bus bar near the battery may be used. All ground connections (source unit and amplifiers) 
should be made at the same location.

D.  Remote: This connection should be made to the source unit’s positive (+12V) remote turn-on output. If your source 

unit does not have a dedicated remote turn-on output, the amplifier’s remote turn-on connection can be connected 

to +12V via a switch that derives power from an ignition-switched circuit.

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Input Section

Two female RCA jacks feed a differential-balanced input section, providing a high degree of input flexibility, and retaining 

superior noise rejection. This type of input architecture also allows the MV600/1 to cleanly accept any analog audio signal 
up to 8 VRMS, without using a line-output converter.

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 Pre-Outs

Two female, RCA jacks deliver line-level, analog audio outputs (Max 4 V RMS) that are compatible with most types of 

aftermarket equipment. 

Product Description

The MV600/1 is a monoblock, Class D marine subwoofer amplifier equipped with NexD2™, the second generation of  

JL Audio’s high-speed switching technology. It is engineered to deliver reference-grade, low-frequency amplification with 

outstanding efficiency. This amplifier is configured using an external device (PC, Tablet or Phone), with the appropriate  

JL Audio TüN™ application installed. (See 

What is TüN?

 section for more info.)

What is Included 

(1) Amplifier

(4) Mounting Screws

(1) Power Connector

(1) 2.5 mm Hex Wrench

(1) Subwoofer Output Harness

(1) 3 mm Hex Wrench

(1) USB A/B Cable (6 ft./1.8 m)

(1) Connection Guide

Cooling Efficiency Considerations

The outer shell of your 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. If an installation calls 

for an enclosure around the amplifier, we recommend that this enclosure be ventilated with the aid of a fan. In normal 

applications, fan-cooling is not necessary. When mounting the amplifier in an enclosed compartment, make sure there is at 

least 1 inch (2.5 cm) of space above the amplifier’s outer shell to permit proper cooling.

Mounting Considerations

MV amplifiers are equipped with keyhole style 

mounting holes to simplify installations in confined 

spaces or vertical-mount applications. Mounting screws 

may be preinstalled, allowing amplifier connections 

to be made prior to securing in its final location. See 

diagram at right.
When selecting the installation location, consider 

the mounting orientation of the amplifier and its 

associated connections. If possible, position the 

amplifier vertically, with all connections pointing 

downward. Wiring and cables should be routed to 

direct potential condensation and moisture away 

from the amplifier. When installed in this manner, the 

amplifier achieves an IPX2 water-resistance rating.

4

 

 Speaker Output Harnesses

Connect the speaker output leads to the corresponding speaker wires. The harness and companion cable are equipped 
with water-resistant connectors for maximum connection integrity in marine environments. 

5

 

 JLid-COMM

 

Connect optional accessories (MVi-HUB, M-DRC-50, VXi-BTC, etc.) to this port.

6

 

 USB

 

This USB A/B port permits connection to a computer for configuration and tuning, using TüN™ Software.

7

 

 Reset Buttons

Use a small pin to perform the following:

 (A)  Factory Reset (wipe memory, reboot amp) - Press and hold the button for 7 seconds. All user settings will be 

erased and the amplifier will revert to its factory settings!

(B) Reboot Amplifier - Press and release the button. Previous user settings will be retained.

LED Status/Condition Reporting

LEDs located on the chassis top and connection panel are used to communicate amplifier status and condition. Refer to the 

table below for the location and meaning for each behavior.

LED / Location

Behavior

Status/Condition›

LED / Amplifier Top

Flashing Blue

Critical Voltage (too low)

Flashing Red

Critical Temperature (too hot)

Flashing Yellow

Excessive Output Current (low impedance/short)

Upper Left LED / JLid-COMM Port

Green

Detecting JLid™ Device

Blue

JLid™ Connection Success

Yellow

Invalid JLid™ Device

Flashing Red

Excessive Current on JLid Port

Upper Right LED /  JLid-COMM Port

Flashing Red

Critical Voltage/Temperature

Excessive Remote Output Current

Green

Active Connection with TüN™ Software

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