JL Audio JLA-010-03129-00 MMR-40 MediaMaster Remote Controller

Full-function NMEA 2000 network remote controller with colour LCD display engineered for auxiliary MediaMaster source unit control in marine environments.

Product Overview

The JL Audio MMR-40 is a NMEA 2000 network controller that delivers complete auxiliary control of MediaMaster source units from helm stations, flybridge positions, or cockpit locations. Featuring a full-colour 2.8-inch LCD display (320×240 resolution) with backlit TFT technology, the MMR-40 automatically recognises host MediaMaster source units and mirrors all controls and screen information for a complete user experience without accessing the main head unit. The weatherproof IP66-rated chassis withstands Australia's harshest marine environments—from tropical Queensland humidity and salt spray to Southern Ocean conditions—making it ideal for offshore fishing vessels, centre console boats, and coastal cruising yachts.

Connectivity options provide flexibility for various vessel configurations: integrate directly with existing NMEA 2000 networks using standard cables and connectors, or establish a direct connection between one MMR-40 and one MediaMaster source unit using MMC-PN2K powered network cables to create an isolated stand-alone network. Independent display theme and lighting controls enable optimal visibility regardless of mounting location or host source unit settings. Operating reliably from -20°C to +70°C (-4°F to +158°F), the MMR-40 suits Australian boating conditions from alpine lake fishing to tropical offshore adventures, providing professional-grade remote control for vessels requiring helm, flybridge, or tower station audio management.

Key Specifications

• NMEA 2000 network controller for MediaMaster source units
• Full-colour 2.8-inch LCD display (320×240 resolution)
• Display type: Colour TFT LCD with backlight
• Weatherproof IP66 rating (when properly installed)
• Operating temperature range: -20°C to +70°C (-4°F to +158°F)
• Automatic recognition of host MediaMaster source units
• Mirrors all host source unit controls and screen information
• Independent display theme and lighting controls
• NMEA 2000 Micro-C connector
• NMEA 2000 LEN: 4 (200mA current draw)
• Multi-language interface: English
• Software updates: USB port
• Dimensions: 118mm (W) × 95mm (H) × 93mm (D) (4.65" × 3.74" × 3.67")
• Weight: Not specified
• 3-year manufacturer warranty

Connectivity Options:

• Direct interface with vessel's NMEA 2000 network (requires NMEA 2000 cables and connectors, sold separately)
• Direct connection with one MediaMaster source unit using MMC-PN2K powered network cables (sold separately, creates isolated stand-alone NMEA 2000 network)

Included Accessories:

• Wired remote controller
• Mounting hardware
• Sun cover
• Documentation

Features & Benefits

Complete MediaMaster Control from Any Location
The MMR-40 automatically recognises host MediaMaster source units and mirrors all controls and screen information onto its 2.8-inch colour LCD display. Access full source selection, volume adjustment, track navigation, playlists, radio tuning, and system settings from helm stations, flybridge positions, or cockpit locations without leaving the wheel. Essential for Australian offshore fishing where helm concentration matters, or coastal cruising where flybridge audio control improves safety and convenience.

Full-Colour LCD with Independent Display Control
The 320×240 resolution colour TFT LCD display delivers clear visibility in Australian sunlight with adjustable backlight intensity. Independent display theme and lighting controls operate separately from the host source unit—configure bright display themes for daylight helm visibility while maintaining dimmed cockpit settings, or vice versa. The included sun cover provides additional glare protection for installations exposed to direct overhead Australian sun at anchor or underway in northern latitudes.

IP66 Weatherproof Construction
When properly installed, the IP66-rated chassis provides comprehensive protection against powerful water jets from any direction and complete dust ingress prevention. Suitable for exposed helm stations, flybridge installations, centre console boats with minimal weather protection, or tower positions on game fishing vessels. The weatherproof design handles deck washdowns, heavy rain, salt spray, and the demanding conditions of Australian coastal and offshore boating without compromising functionality or reliability.

Flexible NMEA 2000 Integration
Two connectivity options accommodate various vessel configurations. Vessels with existing NMEA 2000 networks integrate the MMR-40 directly using standard NMEA 2000 cables and connectors—the controller becomes another node on the network backbone alongside chartplotters, instrument displays, and other marine electronics. Alternatively, establish a direct connection between one MMR-40 and one MediaMaster using MMC-PN2K powered network cables to create an isolated, stand-alone NMEA 2000 network—ideal for simple installations without complex network infrastructure.

Extreme Temperature Operation
The -20°C to +70°C operating range handles Australian boating conditions from alpine lake fishing in Snowy Mountains winter to tropical offshore in Far North Queensland summer. The robust temperature tolerance ensures reliable operation in enclosed engine rooms during summer heat, exposed tower positions in direct sun, or overnight moored in air-conditioned cabins. Critical for vessels operating across diverse Australian climates from Tasmania to Cape York.

Low Current Draw Network Device
The NMEA 2000 LEN rating of 4 (200mA current draw) ensures minimal impact on vessel electrical systems. The low power consumption suits vessels with limited battery capacity, solar-powered electrical systems, or complex NMEA 2000 networks with multiple devices. Essential for extended offshore passages, remote anchorages, or multi-day fishing trips where electrical conservation matters and every milliamp counts toward operational battery runtime.

USB Software Updates
The USB 2.0 port enables software updates to maintain compatibility with evolving MediaMaster firmware, add new features, or resolve operational issues. The update capability extends product lifespan and ensures the MMR-40 remains compatible with future MediaMaster enhancements. Updates can be performed dockside or at anchor using laptop computers, eliminating the need for factory service or dealer visits for firmware maintenance.

Technical Specs

Display Specifications:

• Display size: 2.8 inches (71mm diagonal)
• Display type: Colour TFT LCD with backlight
• Display resolution: 320 × 240 pixels
• Independent display theme control: Yes
• Independent lighting control: Yes

Environmental Specifications:

• Control surface dust/water rating (when properly installed): IP66
• Operating temperature range: -20°C to +70°C (-4°F to +158°F)

Networking Specifications:

• Network type: NMEA 2000
• NMEA 2000 ports: 1 (Micro-C connector)
• NMEA 2000 LEN: 4 (200mA current draw)
• Connection methods: Direct network integration or direct unit-to-unit connection

Stereo Features:

• Supported sources: Derived from host MediaMaster source unit
• Supported audio formats: Derived from host MediaMaster source unit
• Multi-language interface: English

Connections:

• NMEA 2000 ports: 1 (Micro-C connector)
• USB 2.0 ports: 1 (software update only, not for media playback)

Physical Specifications:

• Dimensions (W × H × D): 118mm × 95mm × 93mm (4.65" × 3.74" × 3.67")
• Weight: Not specified
• Warranty: 3 years

Included Accessories:

• Wired remote controller (MMR-40)
• Mounting hardware
• Sun cover
• Documentation

Required Accessories (sold separately):

• NMEA 2000 cables and connectors (for network integration), OR
• MMC-PN2K powered network cables (for direct unit-to-unit connection)

Compatible With / Goes Well With

MediaMaster Source Units (Required):

• JL Audio MediaMaster MM50 marine source unit
• JL Audio MediaMaster MM100s marine source unit
• Other MediaMaster-compatible source units with NMEA 2000 network capability

Required Connection Accessories (sold separately):

• For NMEA 2000 Network Integration:
  • NMEA 2000 backbone cables (various lengths)
  • NMEA 2000 T-connectors
  • NMEA 2000 Micro-C to DeviceNet adapters (if required)
  • NMEA 2000 terminators (if establishing new network endpoints)
  • NMEA 2000 power cables
• For Direct Unit-to-Unit Connection:
  • JL Audio MMC-PN2K powered network cables (creates isolated stand-alone network)

Installation Accessories:

• Marine-grade mounting brackets (if not using included hardware)
• Marine sealant for weatherproof gasket installation
• UV-resistant cable ties for cable management
• Weatherproof cable grommets for bulkhead penetrations

Compatible Vessel Types:

• Centre console fishing boats (helm or tower mounting)
• Flybridge cruisers (auxiliary flybridge control)
• Offshore fishing vessels (tower or tuna tower positions)
• Sailing yachts (cockpit or helm stations)
• Sportfishing boats (cockpit or fighting chair areas)
• Pontoon boats (multiple entertainment zones)

Caution: The MMR-40 requires a compatible MediaMaster source unit to function. It is NOT a standalone head unit. Ensure your vessel has or will have a MediaMaster source unit installed. The MMR-40 only controls MediaMaster units—it cannot control other marine head unit brands or models.

Frequently Asked Questions

Can I use the MMR-40 without a MediaMaster source unit?
No. The MMR-40 is a remote controller, not a standalone head unit. It requires a compatible JL Audio MediaMaster source unit (MM50, MM100s, or other MediaMaster models) to function. The MMR-40 mirrors the MediaMaster's controls and display but cannot operate independently.

Do I need an existing NMEA 2000 network on my boat?
Not necessarily. You can integrate the MMR-40 into an existing NMEA 2000 network using standard cables and connectors, OR create a direct connection between one MMR-40 and one MediaMaster using MMC-PN2K powered network cables. The direct connection method doesn't require a full NMEA 2000 network infrastructure—it creates an isolated stand-alone network.

What's included with the MMR-40 for installation?
The package includes the MMR-40 controller, mounting hardware, sun cover, and documentation. You must purchase connection cables separately: either NMEA 2000 network cables and connectors for network integration, or MMC-PN2K powered network cables for direct unit-to-unit connection. Neither connection method's cables are included.

Is the MMR-40 truly waterproof for exposed helm or tower installations?
The MMR-40 is IP66-rated when properly installed, providing protection against powerful water jets and complete dust ingress prevention. It handles deck washdowns, heavy rain, and salt spray. However, IP66 is not full submersion protection (IP67/IP68). Mount in locations where water drains away rather than pools around the unit. The included sun cover provides additional weather protection.

Can I control different MediaMaster units from multiple MMR-40 remotes on one network?
Yes, on a properly configured NMEA 2000 network with multiple MediaMaster source units and multiple MMR-40 controllers. Each MMR-40 can be configured to control a specific MediaMaster on the network—useful for vessels with separate helm and cockpit audio zones, each with dedicated source unit and remote. Consult JL Audio technical documentation for multi-zone network configuration.