Overview

The JL Audio 010-03129-00 is the JL Audio MMR-40 wired NMEA 2000 network controller that adds a full-function remote station for a connected MediaMaster source unit.

It connects with a NMEA 2000 Micro-C connector and shows source and control information on a 2.8-inch full-color LCD, with backlit buttons and a day or night display setting that can be changed from the face.

The front is IP66 rated for wet helm and cockpit locations, and the included mounting template calls out 3.74 in (95 mm) and 3.12 in (80 mm) reference dimensions to help plan panel space before cutting.

Key features

• NMEA 2000 Certified network controller (LEN 4) for MediaMaster source unit control over the boat network.
• 2.8-inch full-color LCD with large backlit controls for visibility on an open console or enclosed helm.
• Day and night display themes with lighting controls from the keypad for easier viewing after dark.
• IP66-rated face for rain, spray, and routine washdowns; it is not intended for submersion or high-pressure water spray.
• NMEA 2000 Micro-C connection for a standard backbone, using the appropriate NMEA 2000 cables and connectors (not included).
• Can be connected directly to one host MediaMaster using MMC-PN2K powered network cables (sold separately) to form an isolated, stereo-only NMEA 2000 network; powered-cable setups support up to two NMEA 2000 devices.
• USB connection for future software updates.

Installation and setup

This controller is built for flush mounting into a dash or panel. Use the included template to mark the cutout and pilot holes, and make sure you have clearance behind the mounting surface for the unit and its harness before you drill. The gasket seals the bezel against the panel when installed.

For boats with an existing NMEA 2000 backbone, connect it with a Micro-C drop cable and tee (not included). For a stereo-only install without a backbone, it can be linked to one MediaMaster using MMC-PN2K powered network cables (sold separately) and a 12 V feed. This unit does not operate as a stand-alone controller and requires a connected MediaMaster source unit.

Compatibility and on-board use

The MMR-40 makes sense when you want MediaMaster control at a second location, such as adding a remote at the aft cockpit, near a fishing station, or at a second helm. It is a straightforward fit for boats already running NMEA 2000, and it also works for installations where the stereo is the only NMEA 2000 segment.

What’s included

• MMR-40 network controller
• Mounting gasket
• Mounting template
• Four mounting screws
• Protective sun cover
• User manual