Description
JL Audio JLA-010-03372-00 MediaMaster 55 Hidden Marine Stereo - MM55-HR Hideaway Receiver
Concealed marine audio control with multi-zone capability — MediaMaster 55 hideaway receiver delivers professional 3-zone audio distribution with Bluetooth wireless control and NMEA 2000 integration for Australian vessels requiring discreet source unit installation without visible helm displays.
Product Overview
The JL Audio MediaMaster 55 hidden marine stereo (MM55-HR) delivers comprehensive audio source control in compact hideaway receiver format designed for concealed installation in equipment compartments, helm consoles, or below-deck locations controlled entirely via Bluetooth smartphone connectivity. Engineered with 25W x 4 RMS amplification, Multi-Zone technology supporting three independent audio zones with dedicated RCA pre-outs, and IP67 dust/water protection, this hidden receiver manages AM/FM radio with RDS, Bluetooth wireless streaming, USB audio playback, and auxiliary inputs without requiring visible control surface at helm position. NMEA 2000 connectivity enables integration with vessel navigation networks for sophisticated marine installations across recreational boats, center console fishing vessels, and yacht systems requiring professional multi-zone audio distribution with wireless control from helm, cabin, or cockpit positions using smartphone or tablet applications.
Features & Benefits
Concealed Hideaway Design: Compact receiver format (195mm W x 126mm D x 58mm H) enables hidden installation in equipment compartments, under helm panels, or below-deck locations eliminating visible control surfaces at helm position, providing clean uncluttered dash aesthetics while maintaining complete audio control via Bluetooth wireless connectivity.
Professional 3-Zone Audio Distribution: Multi-Zone technology delivers independent audio control for three separate zones with dedicated left/right/subwoofer RCA pre-outs per zone, enabling helm speakers, cabin speakers, and tower speakers to play different sources simultaneously or synchronized content controlled individually via smartphone application.
25W x 4 Integrated Amplification: Built-in Class-D amplifier delivers 25 watts RMS per channel at 4Ω impedance with 2Ω stereo-stable operation, providing sufficient power for direct-connection of JL Audio M3/M6 marine speakers in compact installations or pre-amp outputs for external JL Audio MHD, MVi, or MX marine amplifiers in high-power systems.
Comprehensive Source Flexibility: Multiple audio sources including digital AM/FM tuner with RDS, Bluetooth wireless streaming from smartphones/tablets, USB audio playback supporting MP3/MP4/WAV/AAC formats, and auxiliary RCA input accommodate diverse entertainment preferences from terrestrial radio to streaming services and stored music libraries.
NMEA 2000 Marine Network Integration: Micro-C connector enables integration with vessel NMEA 2000 networks for sophisticated marine installations sharing data with chartplotters, multi-function displays, and vessel management systems, providing coordinated control interfaces and simplified wiring across modern boat electronics.
IP67 Environmental Protection: Complete dust and water ingress protection (when properly installed) withstands harsh saltwater spray, submersion during washdown, humidity, and temperature extremes from -20°C to +65°C, ensuring reliable long-term operation in demanding Australian coastal conditions with comprehensive three-year warranty coverage.
Technical Specs
| Specification |
Details |
| Model |
MM55-HR (Hideaway Receiver) |
| Design Type |
Hidden marine stereo (no display) |
| Physical Dimensions |
195mm W x 126mm D x 58mm H (7.68" x 4.96" x 2.28") |
| Control Interface |
Bluetooth smartphone/tablet app |
| Dust/Water Rating |
IP67 (when properly installed) |
| Operating Temperature |
-20°C to +65°C (-4°F to +149°F) |
| Power Input |
10-16V DC |
| Current Draw (Max) |
15 amps |
| Built-In Amplifier |
Class-D (2Ω stereo-stable) |
| RMS Power Output |
25W x 4 @ 4Ω (14.4V, <1% THD) |
| Multi-Zone Capability |
3 independent audio zones |
| RCA Pre-Outs |
3 zones (L, R, Sub per zone) |
| Audio Sources |
Digital AM/FM with RDS, Bluetooth, USB, AUX |
| Bluetooth Range |
Up to 11 metres (35 feet) |
| USB Audio Formats |
MP3, MP4, WAV, AAC, M4A, M4B |
| Auxiliary Input |
1x RCA (2V or 1V RMS sensitivity) |
| USB Port |
1x USB 2.0 (storage device, 1A charging) |
| NMEA 2000 |
1x Micro-C connector (LEN 1, 50mA) |
| Antenna Ports |
1x AM/FM antenna connection |
| Speaker Connections |
4 outputs (2 zones amplified) |
| DAB+ Ready |
Europe only |
| Software Updates |
Via USB |
| Warranty |
3 years manufacturer warranty |
Compatible With / Goes Well With
JL Audio Marine Speakers: M3 marine speakers (6.5", 7.7", 8.8" coaxials), M6 marine speakers (6.5", 7.7", 8.8" coaxials), M3 enclosed tower speakers, VeX enclosed tower systems providing full-range reproduction powered directly from built-in amplifier or via external amplification.
JL Audio Marine Amplifiers: MHD marine amplifiers (monoblock and 4-channel), MVi marine amplifiers with DSP, MX marine and powersports amplifiers, XDM car and marine amplifiers receiving pre-amp signals from MediaMaster 55 RCA outputs for high-power multi-zone systems.
Marine Subwoofers: JL Audio M3 marine subwoofers, M6 marine subwoofers, M7 marine subwoofers receiving dedicated subwoofer pre-out signals per zone enabling independent bass control for helm, cabin, and tower audio zones with external amplification.
Polaris RZR Systems: JL Audio Stealthbox enclosed speakers for Polaris RZR applications (SB-POL-RZG2SPKR/M3-650i, SB-POL-RZG3/10TW3) enabling marine stereo integration in powersports vehicles requiring waterproof source units with Bluetooth control.
Installation Accessories: Marine-grade RCA cables, waterproof wire harnesses, USB extension cables, Bluetooth remote controls, NMEA 2000 network cables, AM/FM marine antennas, sealed wire connectors, mounting brackets for concealed receiver installation.
Frequently Asked Questions
How do I control this hidden receiver without a display at the helm? The MM55-HR is controlled entirely via Bluetooth smartphone or tablet application providing complete access to all sources, volume, zone control, and settings. Optional wired remote controls are also available for helm-mounted physical control if preferred. The Bluetooth wireless range extends up to 11 metres (35 feet) from the hidden receiver location.
Can I run three completely independent audio zones with different sources simultaneously? Yes, Multi-Zone technology enables three independent zones playing different audio sources simultaneously. For example: helm zone playing AM/FM radio, cabin zone streaming Bluetooth music, and tower zone playing USB audio, with independent volume control per zone via smartphone application.
What's the maximum speaker power I can connect directly to the built-in amplifier? The built-in Class-D amplifier delivers 25W RMS per channel at 4Ω impedance, suitable for directly powering JL Audio M3/M6 marine speakers. For higher power requirements, use the RCA pre-outs to connect external JL Audio marine amplifiers delivering 50-250W+ per speaker.
Does this receiver require professional installation or can I install it myself? Professional installation is recommended for proper waterproof integration, concealed mounting, NMEA 2000 networking, and multi-zone wiring. Installation requires 12V DC power connection, speaker wiring, antenna installation, RCA pre-out routing, and smartphone pairing—tasks requiring marine electrical expertise and proper waterproofing techniques.
Is this compatible with my existing NMEA 2000 marine electronics network? Yes, the Micro-C NMEA 2000 connector integrates with existing vessel networks sharing data with chartplotters and multi-function displays. The receiver draws 50mA (LEN 1) from the network and enables coordinated control interfaces. Verify your network has available power budget and backbone capacity before integration.
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