JL Audio Weatherproof Source Unit with Full-Color LCD Display - MM50



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MediaMaster® - Full-featured, weatherproof marine source unit with full color LCD display - 25 Watts x 4 @ 4 Ω

Need additional information on making MediaMaster® connections?

The MediaMaster® 50 is a high-performance, single-chassis, powered source unit, engineered to deliver outstanding fidelity and advanced audio features on your boat, UTV and many other outdoor applications.Equipped with a variety of mechless audio source options, the MM50 includes a Digital AM/FM Tuner, Bluetooth® connectivity, a USB connection for a USB drive or iPhone® and an Analog AUX input, all designed to ensure non-stop playback of your favorite soundtracks, no matter how bumpy the ride. A rugged, weatherproof (IP66 rated) chassis houses a 2.8-inch full-color LCD display, with separate Day/Night lighting themes for visibility, even in bright sunshine. When in motion, you will also appreciate the clean, uncluttered user interface with big text and large backlit controls.Audio output options include a rock-solid, onboard amplifier, capable of powering your speakers with 100 watts (25W RMS x 4 @ 4 ohms) of break-through sound, as well as six channels of audiophile-quality preamp outputs from two independent main zones, plus a dedicated subwoofer zone. Each zone has its own flexible audio options and is controlled by a configurable master volume knob for quick, on-the-fly level adjustments, giving you complete command of volume levels in different areas of your boat.With certified NMEA-2000® connectivity, the MM50 also offers control functionality using your Garmin, Lowrance, Raymarine or Simrad Multifunction Display! (MFD)

Need additional information on making MediaMaster® connections?

View the MediaMaster® Remote Compatibility Help Center Article.


General Specifications

  • Input Operating Voltage : 10 - 16 VDC
  • Standby Current Draw : 100 mA
  • Operating Current Draw : 15 A
  • Recommended Fuse Value : 15 A
  • Remote Turn-on Capacity : 500 mA (max)
  • Operating Temperature Range : -4 F to +158 F (-20 C to +70 C)
  • Display Size / Type : 2.8-inch / TFT LCD backlighted
  • Display Resolution : 320 x 240
  • Output Channels : Zones 1&2: Two stereo pairs of RCA plugs (4V RMS) Sub: One mono pair of RCA plugs (4V RMS)
  • Output Zones : Zones 1&2: Variable, Fixed or Off Sub: 500 Hz Low-Pass only
  • Maximum Output Voltage : 4V RMS (Variable), Selectable 4V/2V/1V RMS (Fixed)


Tuner :

  • FM Tuner with RDS : 87.5 MHz to 107.9 MHz (0.2 MHz step)
  • AM Tuner : 530 kHz to 1710 kHz (10 kHz step)
  • NOAA Weather Band Tuner : 162.400 MHz to 162.550 MHz (0.025 MHz step)
  • Favorites : 18 presets across all tuners

Bluetooth® :

  • Profile : A2DP v1.2, AVRCP v1.4
  • Core Specification : Version 2.1 + EDR
  • Codec : SBC
  • Connection Range : Up to 35 ft / 11 m


  • Interface : USB 2.0 host
  • Maximum Current Output : 2.1 A
  • Supported Audio Formats : MP3, WAV, WMA
  • Apple Compatibility : iPhone 5 or beyond (functionality contingent upon compatible iOS release)

Physical Specifications

  • Height (H) : 3.74 in / 95 mm
  • Width (W) : 4.65 in / 118 mm
  • Depth (D1) : 2.36 in / 60 mm
  • Depth (D2) : 3.67 in / 93 mm
  • Mounting Hole Height (A) : 3.12 in / 80 mm
  • Mounting Hole Width (B) : 3.74 in / 95 mm

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