MB Quart GMR-LED Source Unit Instruction Manual

Product Overview

The MB Quart GMR-LED is a multimedia digital entertainment controller featuring a 160-Watt internal amplifier. This unit is designed for marine and off-road environments, offering robust performance and versatile connectivity options. It includes AM/FM/weather band radio, Bluetooth, and USB input capabilities, making it a comprehensive media player for various applications.

Key features include marine-grade protection (IPX67 water and dust proof), a 3.5-inch high-contrast LED screen for easy viewing of media artwork and information, and intuitive controls for a seamless user experience.

What's in the Box

• GMR-LED Source Unit

Please ensure all components are present before proceeding with installation.

Setup and Installation

The GMR-LED unit is built with marine-grade protection, rated IPX67 water and dust proof, ensuring durability in harsh conditions. All connections are clearly labeled and color-coded for straightforward installation.

Physical Dimensions

The unit's compact design allows for flexible mounting. Refer to the diagram below for precise measurements:

Figure 1: GMR-LED Source Unit Dimensions. The unit measures 2.4 x 4.1 x 4.1 inches and weighs 2 pounds.

Wiring Connections

Connect the power, ground, and accessory wires as indicated. The unit also features RCA outputs for connecting to external amplifiers and subwoofers. Ensure all connections are secure and properly insulated to prevent damage.

Figure 2: Dual-Zone Ski Boat System Wiring Diagram. This diagram illustrates how to connect the GMR-LED multimedia controller to a 4-channel amplifier for interior and wakeboard tower speakers, and a subwoofer amplifier for subwoofers, utilizing dual-zone control.

Operating Instructions

The GMR-LED offers multiple ways to enjoy your audio, from traditional radio to modern streaming.

Power On/Off and Source Selection

Press the power button to turn the unit on or off. Use the 'Source' button or the rotary knob to cycle through available audio sources: AM, FM, Bluetooth, and USB.

Figure 3: FM Radio Display. The unit's screen clearly shows the current FM frequency and custom preset.

Bluetooth Connectivity

The Bluetooth-enabled receiver head unit allows for easy connection to any compatible device. Utilize the quick pair feature to automatically connect to the last paired device when in range. Stream your entire music library wirelessly, with album artwork displayed on the screen.

Figure 4: Bluetooth Music Playback. Seamlessly connect your smartphone to stream music and view album art on the GMR-LED display.

USB Control

Connect smartphones, portable media devices, and access streaming services via the USB input. The unit provides control over your connected device's music library.

Audio Customization

Personalize your sound with custom EQ presets, fade and balance adjustments, and bass frequency selection. The intuitive Radial Shift UX control navigation system provides ultimate control over your music settings.

Figure 5: Balance & Fade Settings. Adjust audio output to optimize sound distribution within your vehicle.

Remote Control (RFREM)

The unit supports RF (Radio Frequency) remote control, allowing seamless operation with the optional RFREM steering wheel mounted controller. This puts all audio controls conveniently at your fingertips.

Official Product Video

Maintenance

To ensure the longevity and optimal performance of your MB Quart GMR-LED source unit, follow these maintenance guidelines:

• Cleaning: Regularly wipe the unit's surface with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners, as they can damage the screen and buttons.
• Connection Checks: Periodically inspect all wiring connections for corrosion or looseness, especially in marine or off-road environments. Secure any loose connections and clean any corrosion to maintain proper electrical contact.
• Water Exposure: While the unit is IPX67 rated, prolonged submersion is not recommended. Ensure all covers and caps are securely fastened to maintain its waterproof integrity.
• Storage: If storing the vehicle or vessel for an extended period, disconnect the unit from power to prevent battery drain.

Troubleshooting

If you encounter issues with your GMR-LED unit, refer to the following common troubleshooting steps:

• No Power:
  • Check the power and ground connections.
  • Verify the vehicle's battery voltage.
  • Inspect the inline fuse for the unit; replace if blown.
• No Audio Output:
  • Ensure the volume is turned up and not muted.
  • Check speaker connections and RCA cables.
  • Verify the correct audio source is selected.
• Bluetooth Pairing Issues:
  • Ensure Bluetooth is enabled on both the GMR-LED and your device.
  • Forget the device from your phone's Bluetooth settings and attempt to re-pair.
  • Move your device closer to the unit.
• USB Playback Issues:
  • Ensure the USB device is properly connected and formatted.
  • Check for compatible audio file types on the USB device.
• Screen Not Displaying Correctly:
  • Adjust backlight settings in the unit's menu.
  • If the screen is completely blank, refer to "No Power" steps.

If problems persist after attempting these steps, please contact MB Quart customer support for further assistance.

Specifications

Warranty and Support

For warranty information and technical support, please refer to the documentation included with your product or visit the official MB Quart website. Keep your proof of purchase for any warranty claims.

Manufacturer: Maxxsonics USA

Brand: MB Quart

Date First Available: March 18, 2019