MM55 Marine Source Unit
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Specifications
- Model: Marine Source Unit
- Compliance: FCC Part 15, Innovation, Science and Economic
Development Canada’s licence-exempt RSS(s) - Radiation Exposure: FCC limits with a minimum distance of 20 cm
between the radiator and the body - Power Output: 3.74W x 3.15H (95 mm W x 80 mm H)
- Connections: USB, ANT, AUX-IN, AM FM DAB+, ZONE outputs, SUB
output, Remote, Power, Speaker outputs - Control Functions: Source/Power, Volume/Select, Function,
Settings, Back/Menu, Favorites, Mute/Pause, Forward, Backward
Product Usage Instructions
Mounting
Mount the Marine Source Unit using the provided #8 screws (25
mm) ensuring a secure fit. Use a 7/64 drill bit for pilot holes if
needed.
Connections
Connect the unit to power (+12V DC), ground, speakers, antenna,
USB, AUX-IN, and any additional zones as needed following the
labeled connections on the unit.
Control Functions
Use the control panel to select audio sources, adjust volume,
navigate settings, access favorites, mute/pause playback, and skip
tracks.
FAQ
Q: What should I do if there is interference with radio or TV
reception?
A: Try reorienting or relocating the antenna, increasing
separation between equipment and receiver, connecting to a
different outlet, or consulting a professional technician for
assistance.
Q: How do I set up additional audio zones?
A: Use the ZONE outputs labeled Z1, Z2, ZONE 1, ZONE 2, ZONE 3
for connecting additional speakers or audio equipment in separate
zones.
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MARINE SOURCE UNIT
OWNER’S MANUAL
FCC COMPLIANCE STATEMENT This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must not accept any interference received, including interference that may cause undesired operation.These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, the user is encouraged to try to correct the interference by one or more of the following measures:
– Reorient or relocate the receiving antenna. – Increase separation between the equipment and
the receiver. – Connect the equipment to an outlet on a circuit
different from that to which the receiver is connected. – Consult the dealer or an experienced radio/TV technician for help. Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
FCC RADIATION EXPOSURE STATEMENT This device complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and any part of your body.
CANADA STATEMENT This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:
(1) This device may not cause interference. (2) This device must accept any interference,
including interference that may cause undesired operation of the device.
The device meets the exemption from the routine evaluation limits in section 2.5 of RSS 102 and compliance with RSS-102 RF exposure, users can obtain Canadian information on RF exposure and compliance. This equipment meets the exemption from the routine evaluation limits in section 2.5 of RSS-102. It should be installed and operated with a minimum distance of 20cm between the radiator and any part of your body.
SAFETY CONSIDERATIONS · Only use this product in vehicles with 12 volt,
negative-ground electrical systems. This product is not certified or approved for use in aircraft. · Mount this product securely to prevent damage or injury in severe conditions. · Do not replace the power wire fuse with one of a different value. Never bypass the fuse. · Listen to your audio system at levels appropriate for operating conditions and hearing safety.
INSTALLATION CONSIDERATIONS · Installation requires appropriate tools and
safety equipment. Professional installation is recommended. · This product is water-resistant. Do not submerge or subject to high-pressure water spray. · Before installation, turn off the audio system and disconnect the battery system from the audio system. · Install in a dry, well-ventilated location that does not interfere with your factory-installed systems. If a dry environment is not available, a location that is not exposed to heavy splashing may be used. · Before cutting or drilling, check for potential obstacles behind mounting surfaces. · Carefully route all system wiring away moving parts and sharp edges; secure with cable ties or wire clamps and use grommets and loom where appropriate to protect from sharp edges.
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EN
x1
x1
x1
#8 x 1″ (25 mm)
x1
x1
x4
3
GENERAL MOUNTING
3.74″W x 3.15″H (95 mm W x 80 mm H)
#8 x 1″ (25 mm)
7/64″ (2.78 mm)
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GENERAL CONNECTIONS
EN
USB
1A
ANT
AUX-IN
L (BK) R (RD)
ZONE 1 ZONE 2 ZONE 3 NMEA LEN 1
L (BK) R (RD) SUB (CLR)
L (BK) R (RD) SUB (CLR)
L (BK) R (RD) SUB (CLR)
REMOTE
Z1 SPKR OUT Z2 SPKR OUT
POWER
15A
5
AM FM DAB+ AUX
Z1 L+ (WH) Z1 L- (WH/BK)
Z1 R+ (GY) Z1 R- (GY/BK)
Z2 L+ (GN) Z2 L- (GN/BK)
Z2 R+ (VI) Z2 R- (VI/BK)
+12V DC (RD) + 15A
GROUND (BK) –
+12V
(10 – 15.9V DC)
ILLUMINATION (OR) +
AMP TURN-ON (BL) +
CONTROL PANEL
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EN
GENERAL CONTROL FUNCTIONS
Control Source/ Power
Volume/ Select
Function
· Short press to turn ON; Long press to turn OFF · While on, short press to display the SOURCE: Select menu
· Rotate to adjust Audio Zone Levels (volume) · Rotate to navigate · Press to make selections
SUB · Short press to access Subwoofer Trim Level settings
Settings
· Short press to access the Audio Zone: Tone & Balance settings · Long press to access the System Settings: Main Menu
Back/ Menu
· Short press to go back one step or access source specific menus
Favorites
· Short press to access stored presets · Long press to store a frequency as a preset (up to 18)
Mute/ Pause
· Short press to mute/unmute audio (AM/FM/DAB+/AUX) or pause/resume the current selection (USB/Bluetooth®) · When the Audio Zone Levels screen is displayed, short press to mute all audio (AM/FM/DAB+/AUX/USB/Bluetooth®)
Forward
Short press to: · Manually adjust tuner forwards (AM/FM/DAB+) · Select the next track (USB/Bluetooth®) Long press to: · Seek to the next channel (FM); Skip forward ten frequency steps (AM) · Fast-forward (USB)
Backward
Short press to: · Manually adjust tuner backwards (AM/FM/DAB+) · Restart track/select the previous track (USB/Bluetooth®) Long press to: · Seek to the previous channel (FM); Skip backwards ten
frequency steps (AM) · Fast-rewind (USB)
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SYSTEM MENU SETTINGS · Long press to access the System Settings: Main Menu
· Rotate to navigate · Press to make selections
Setting Name this Device Audio Zone Setup
AUX Input Sensitivity Diagnostic
Display
Battery Monitor
Scrolling Text Tuner Region Power-up Settings Mobile Application
Remote Control
Language
Function
Create a custom name to display on devices connected with Bluetooth® wireless technology or for NMEA 2000® networks Configures each set of audio zone outputs
Configures AUX input sensitivity: 2V or 1V RMS (default)
Displays serial number, hardware and software version info
Configures display and brightness settings
Notifies when +12VDC supply voltage drops below 10 volts or above 16 volts
If triggered, the unit will enter Safe Mode with a message to turn the unit off until normal operating voltage is restored
Enables continuous scrolling of available RDS/track text info
Configures AM/FM tuner range/scale for a specific region
Configures display and volume settings upon activation
Access pairing options for mobile device application control
Access pairing options for controllers equipped with Bluetooth® wireless technology
Configures displayed navigation controls and user interface language
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EN
AUDIO ZONE SETUP MENU SETTINGS · Long press to access the System Settings: Main Menu
· Rotate to navigate · Press to make selections
Zone
Z1: Zone 1 Z2: Zone 2 Z3: Zone 3
Function
Level Control Mode
Rename Zone Max Volume Limit HPF Sub 1 Sub 2 Sub 3
Setting 1
Setting 2
Relative: Links the volume levels of Zones 2 – 3 with the level of Zone 1. (Linked zones will proportionally follow Zone 1’s volume.) Each zone’s offset level is independently adjustable, allowing you to create a customized level controller, specific to a vessel’s layout. Absolute: Creates an independent level control for selected zones, each with its own separate volume level slider.
Fixed
Off
4V RMS Max (default) 2V RMS Max 1V RMS Max
Bow, Bridge, Cabin, Cockpit, Galley, Helm, Stateroom 1, Stateroom 2, Tower, Transom
Custom Name
Alphanumeric Input
Factory Default
Max Vol Limit
High Pass Filter
Off (default) 80 Hz 100 Hz 120 Hz
LPF (Low Pass Filter)
Off (default) 60 Hz 80 Hz 100 Hz
Sub Off
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AUDIO STREAMING WITH BLUETOOTH® WIRELESS TECHNOLOGY You may listen to audio wirelessly from up to 35 feet away (11 m) using compatible devices equipped with Bluetooth® wireless technology. Up to eight devices can be paired, but only one streaming device can connect at a time.
SETTINGS FOR DEVICES WITH BLUETOOTH® WIRELESS TECHNOLOGY
· With Bluetooth® selected as a source, short press to display the Bluetooth® : Main Menu
· Rotate to navigate · Press to make selections
Setting
Now Playing
Pair New Device Connect Paired
Device Set Primary Device
Delete a Paired Device
Delete All Paired Devices
Function Return to the Now Playing Screen Initiates Pairing Mode (connected devices will be disconnected) Display all paired devices for connection Assign priority to a paired device for automatic connection Select from paired devices for removal
Removes all paired devices from memory
· Hereby, Garmin declares that the radio equipment type MM55 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: www.garmin.com/compliance
· MM55 Wireless Specification: Bluetooth transmitter frequency range: 2400 MHz – 2483.5 MHz Bluetooth transmitter power: <14 dBm (EIRP)
· Hereby, Garmin declares that this MM55 is in compliance with the essential requirements and other relevant provisions of Radio Equipment Regulations 2017. The full text of the UK declaration of conformity is available at the following internet address: www.garmin.com/compliance
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EN
USB CONNECTIONS Use the USB port to connect with USB storage class devices (thumb drive, digital audio player, etc.). Includes 1 A charging output.
Setting Now Playing
Shuffle Repeat Play All
USB MENU SETTINGS
· With USB selected as a source, short press to display USB: Main Menu
· Rotate to navigate · Press to make selections
Function Return to the Now Playing Screen Activate Shuffle: On or Off (default) Activate Repeat: All, Song or Off (default) Plays all content within all folders
· Properly secure the connected device before driving to prevent damage from dropping or sudden acceleration/braking.
· Control, functionality and display may vary depending on the model and version of the connected device.
· When connected via USB port, make sure to unpair or disable the device’s wireless connection to avoid possible playback conflicts.
· If you experience abnormal performance during operation, disconnect the device and check its condition. Restart your device if performance does not improve.
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OPTIONAL CONTROLLER AND INTERFACE ACCESSORIES The following connections are included for adding accessories (sold separately). Refer to the supplied owner’s manual of each accessory for specific user and installation instructions.
Connection for NMEA 2000® Networks Micro-C plug permits direct connection to a vessel network using accessory cables and connectors (sold separately). Note: Functionality requires compatible entertainment protocols (PGN) for NMEA 2000® networks and may require a software upgrade of your multifunction display (MFD). Refer to your MFD manufacturer for device compatibility info.
MediaMaster® MMR-40 Network Controller Full-function, water-resistant (IP66 rated) controller with full-color LCD display
Multifunction Display (MFD) Control Achieve control functionality using your vessel’s multifunction display MFD
MediaMaster® MMR-5N2K Network Volume Controller Water-resistant (IPX7 rated) controller
MediaMaster® MMA-1-HTML MFD Data Interface Digital interface generates themed navigation and controls onto your vessel’s multifunction display (MFD)
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EN
Connection using Bluetooth® Wireless Technology
Ultra-efficient Bluetooth® Low Energy technology permits wireless control from up to 35 feet (11 m) away. Pair up to eight remotes to a single source unit.
Connection for Wired Remotes Remote plug permits direct connection of wired controllers using accessory cables and splitters. Add up to three remotes to a single source unit, at up to 75 feet (23 m) away.
MediaMaster® MMR-25W Wireless Controller Water-resistant (IP68 rated) controller
MediaMaster® MMR-20-BE Wired Remote Controller Water-resistant (IP67 rated) controller
MediaMaster® Remote Controller App Free, full-function, application controller using your compatible wireless device
Note: App functionality may require update of source unit software. Visit: www.jlaudio.com/support
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SPECIFICATIONS
Electrical
Operating Voltage 14.4V DC (10V 16V)
Operating Temp Range -4 F to +149 F (-20 C to +65 C)
Current Draw / Fuse Value 15 A (max) / 100 mA (standby) / 15 A
NMEA 2000® LEN 1 (Micro-C connector)
Display / Resolution 2.8″ TFT LCD backlighted / 320 x 240
Preamp Audio Outputs/Inputs
Output Channels One stereo pair and mono subwoofer RCA plugs per zone
Output Configuration Relative, Absolute, Fixed or Off
Maximum Output Voltage
Relative or Absolute: 4V RMS Fixed: Selectable 4V/2V/1V RMS
Output Impedance 250
Auxiliary Input One stereo pair of RCA plugs (2V/1V RMS Input Sensitivity)
Amplified Audio Outputs
Rated RMS Power @ 14.4V 25W x 4 @ 4
Minimum Impedance 2 per channel
Sound Control Options
Tone and Balance Treble, Midrange, Bass and Balance (all zones)
High-Pass Filter Off, 80 Hz, 100 Hz and 120 Hz (each zone)
Low-Pass Filter Off, 60 Hz, 80 Hz and 100 Hz (each subwoofer zone)
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)
DAB+ Tuner 170 MHz to 230 MHz
Favorites 18 presets across all tuners
Bluetooth®
Profile A2DP v1.2, AVRCP v1.4
Core Specification Version 2.1 + EDR
Codec SBC, Qualcomm® aptXTM audio
Connection Range Up to 35′ (11 m)
USB
Interface USB 2.0
Maximum Charging Output 1 A
Supported Audio Formats MP3, MP4, WAV, AAC, M4A, M4B
Dimensions
Unit W x H x D 4.65″ x 3.74″ x 3.66″ (118 mm x 95 mm x 93 mm)
Mounting Hole W x H 3.74″ x 3.15″ (95 mm x 80 mm)
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MM55_MAN-062024
© 2024 Garmin Ltd. or its subsidiaries All rights reserved. Garmin reserves the right to change or improve its products and to make changes in the content of this manual without obligation to notify any person or organization of such changes or improvements. For help with your product, go to https://www.jlaudio.com/support. Garmin®, JL Audio and MediaMaster are trademarks of Garmin Ltd. or its subsidiaries, registered in the USA and other countries. The JL Audio logo and the MediaMaster logo are trademarks of Garmin Ltd. or its subsidiaries. These trademarks may not be used without the express permission of Garmin. The BLUETOOTH® word mark and logos are owned by Bluetooth SIG, Inc. and any use of such marks by Garmin is under license. NMEA 2000®, and the NMEA 2000 logo are registered trademarks of the National Marine Electronics Association. Other trademarks and trade names are those of their respective owners.
Documents / Resources
 | JL AUDIO MM55 Marine Source Unit [pdf] Owner's Manual MM55, MM55 Marine Source Unit, MM55, Marine Source Unit, Source Unit, Unit |