MB QUART GMR-LED Manuel
Operator’s Guide and
Installation Instructions
GMR-LED
AM/FM/USB/Bluetooth®
Multimedia Controller
for Off-Road and Marine
1/ 2/INT 3/RPT 4/RDM
Source
2
Congratulations for choosing the AM/FM/USB Bluetooth
Multimedia Controller by MB Quart. For more detailed
information about the product, please visit MBQuart.com
CAUTION
Always consider consulting a professional audio installation
technician before installing any mobile audio components. Be
careful and take your time. Do not let wires make contact with
metal edges, sources of moisture or hot engine components.
General Information
Powersports and Marine Multimedia Source Unit
AM/FM, Weather Band Radio, USB, Bluetooth®and AUX sources
160 Watts Peak Power with Pre Amplier Line Outputs
Marine Certied to IPX67 for Water and Dust Intrusion
Auxiliary A/V Sources
Quick Connect Bluetooth Audio USB Audio Input w/Charging
Auxiliary RCA Stereo Preamp Input Weather Band Radio
Composite Video Camera Input Composite Video Output
AM / FM / Weather band Section
USA Frequency: FM87.9 – 107.9MHz / AM530-1710kHz
Europe Frequency: FM87.5 – 108MHz / AM522 – 1620kHz
NOAA NWR Weather Band Frequency: 162.400-162.550MHz
Intermediate AM/FM Frequency: 10.7MHz
Intermediate Frequency Rejection: 50dB
Noise Limit Sensitivity: >5uV
USB / AUX / Bluetooth Audio Section
RCA S/N: >81dB Powered Outputs S/N: >74dB
USB A/D Conversion: 16bit Frequency Response: 20Hz – 20KHz
Audio Section & Other Features
Power Output: 4 x 40 Watts Max (160 Watts Peak Power)
Load Impedance: 4 - 8 Ohms / Channel
Preamp Output Voltage: 4 volts
Dual Zone Capability between Preamp Outputs and Built-in Power
Independent Subwoofer Level Control with Selectable Low Pass Filter
8-Band Graphic EQ (62, 125, 250, 500, 1K, 4K, 10K and 16K)
Installation Specications
4” / 100mm - Total Mounting Depth Required (Incl. U-Bracket)
3” / 76.2mm - Cut Out Diameter
3
Wiring and Connections
(M) Yellow
(L) White/Black
Water Tight Plug Face Shown (Wires to Connect Exit Rear)
(K) White
(J) Red
(H) Purple/Black
(G) Purple
(F) Gray
(E) Gray/Black
(D) Green/Black
(C) Green
(B) Blue
(A) Black
Yellow (+12v Constant)
Red (+12v Accessory)
Water
Tight Plug
USB Connector
Orange (Illumination)
Purple/White (Reverse)
AM/FM Antenna
AUX Input
SUB Outputs
FRONT Preamp
Outputs*
REAR
Preamp Outputs*
Camera Input
CVBS Video Output
(Mirrors Unit’s Screen)
Black (Chassis Ground)
Blue(Amp Turn-On)
*Works with
ZONE Control
Note: See wiring chart on next page for connection tips, wire
colors and functions. Also note preamp level output connections
if using external ampliers and ZONE control capability.
See page 19 for Video Output details
4
Wiring and Connections
Wire Color Location Function
Black Plug Pin A Negative Chassis Ground (-)
Blue Plug Pin B Amp Turn-On (+12v Output)
Green Plug Pin C Left Rear Speaker (+)
Green/Black Plug Pin D Left Rear Speaker (-)
Gray/Black Plug Pin E Right Front Speaker (+)
Gray Plug Pin F Right Front Speaker (-)
Purple Plug Pin G Right Rear Speaker (+)
Purple/Black Plug Pin H Right Rear Speaker (-)
Red Plug Pin J +12 volt Accessory
White Plug Pin K Left Front Speaker (+)
White/Black Plug Pin L Left Front Speaker (-)
Yellow Plug Pin M +12 volt Constant (>10a)
Purple/White Harness Reverse Camera +12v Input
Orange Harness +12 volt Illumination
Preamp Level Audio Connections
● Front and rear RCA preamp outputs are labeled as such. These are
intended to be connected to external ampliers, not included.
● Subwoofer RCA outputs (green RCAs) are mono and paralleled.
They are identical subwoofer audio signals. Their frequency range is
controlled by the low pass crossover and the subwoofer level control.
Both are found in SETTINGS. See Page 18. We recommend starting
with 100Hz for the low pass crossover point.
● The unit offers a zone control feature to balance sound levels
between different zones. The front and/or rear RCA outputs (using
external ampliers) are one zone. The source unit's built-in power is
the other zone. An example is a boat having separate volume control of
amplied wakeboard tower speakers versus cabin speakers positioned
closer to listeners using the unit's built-in power. Zone level control is
found in SETTINGS. See page 18. Subwoofer RCA outputs or speaker-
level outputs are unaffected by the zone level control. All work with the
main volume.
● We recommend wire-to-wire connections such as power, ground and
speaker wiring are soldered and protected with either heat shrink tubing
or high quality electrical tape.
● The main (yellow) power wire should be connected to a source with at
least 10 amps of additional current capability to support the unit.
5
Installation Opening & Depths Mounting Bracket Details
3” / 76.2mm
Cut Out Diameter
3” / 76.2mm
4” / 100mm
Installation Depth incl. Wiring
Mounting Surface
U-Bracket Mounting
Nuts
Break Off Marked
Joints for Exact Fit
Rear Mounting Instructions
● Check for appropriate mounting depth and mechanical or
electrical obstacles behind the mounting panel BEFORE any
cutting. Including the “U”-shaped aluminum mounting bracket, at
least 4” (100mm) depth is required.
● Using a 3” hole saw or air saw, cut a 3” (76.2mm) diameter
hole in the mounting panel. Use a le or sandpaper to smooth
out any rough edges after the cut is complete.
● Thread the two supplied bolts into the back of the multimedia
controller using a 9/32” nut driver or deep socket. The threaded
holes are located just above the wiring harness in the heatsink.
● Thread two of the supplied 9/32” mounting nuts upside down
on the bolts. The at surface of the nut will sit ush with the
inside of the mounting bracket to allow spacing (if needed).
● Insert the source unit through the mounting hole opening. Be
sure to allow enough depth for wiring to be securely tied up once
the installation is complete.
● Attach the aluminum mounting bracket to gauge the sizing and
that it will t over the supplied threaded bolts. If necessary, use
pliers to break away the marked sections until the bracket ts
snugly against the mounting panel. Be sure the bracket clears
the wiring on the back of the unit without rubbing or heavily
bending the wires.
● Attach the remaining supplied 9/32” mounting nuts on the
threaded bolts to secure the mounting bracket.
6
Front Mounting Instructions
● Check for appropriate mounting depth and mechanical or
electrical obstacles behind the mounting panel BEFORE any
cutting. At least 3.75” (95.25mm) depth is required.
● Using a 3” hole saw or air saw, cut a 3” (76.2mm) diameter
hole in the mounting panel. Use a le or sandpaper to smooth
out any rough edges after the cut is complete.
● Remove the snap-in covers on the front panel hiding the
mounting holes. Use a small at head screw driver in the two
small indents on each cover to gently pry open.
● Insert the source unit through the mounting hole opening. Be
sure to allow enough depth for wiring to be securely tied up once
the installation is complete. Ensure the source unit is level.
● Mark four (4) holes using an awl, straight pick tool or 1/16"
(1.5mm) drill bit to make the markings. DO NOT DRILL
THROUGH WITH THE SOURCE UNIT IN PLACE.
● Remove the source unit and gently drill the four (4) marked
locations for mounting holes using a drill with a 1/16" (1.5mm)
drill bit.
● Re-insert the source unit in the opening. Gently install the four
supplied screws in each of the mounting holes with a handheld
screwdriver. Do not use drills or battery-powered screw guns for
this step.
● Replace the snap-in covers on the source unit's front panel.
Installation Opening & Depths Front Mounting Details
3” / 76.2mm Cut Out Diameter
3” / 76.2mm
Mounting
Surface
3.75” / 95.25mm Installation Depth incl. Wiring
Mounting Surface
Mounting
Screws
Snap-In
Covers
Drill (4) 1/16” / 1.5mm Holes
7
1/ 2/INT 3/RPT 4/RDM
Source
POWER/Selector and Volume Knob
● Press the POWER/Selector Knob to power on the unit.
● Rotate the POWER/Selector Knob to view sources when source
selection menu wheel is displayed. To select a source, press and
release the POWER/Selector Knob.
● Rotate the POWER/Selector and Volume Knob to increase or
decrease sound levels once a source is selected.
● Press and hold the POWER/Selector Knob for 5 seconds to power
the unit off.
SOURCE Button
● Press the SOURCE button to display the source selection menu
wheel. See next page for details. Also functions as the “back” button
in a SETTINGS menu (such as EQ, Audio, Zone Volume, Clock
Adjust, Backlight, etc.)
1/ Button
● Preset 1 for AM/FM, pairing on Bluetooth source.
2/INT Button
● Preset 2 for AM/FM. No other function.
3/RPT Button
● Preset 3 for AM/FM. Repeat play (1 or all) on USB source.
4/RDM Button
● Preset 4 for AM/FM. Random play (Shufe) on USB source
Scan Down for AM/FM or Track Back for USB/Bluetooth source.
Mute for AM/FM and AUX or Play/Pause for USB/Bluetooth source.
Scan Up for AM/FM or Track Up for USB/Bluetooth source.
1
34 5
2
Front Panel Controls
1
6
3
4
5
6
7
9
8
987
2
8
Source Selection
AM Radio
FM Radio
Camera Input
Settings
USB
Aux Input
Bluetooth
Weather
1/ 2/INT 3/RPT 4/RDM
Source
1/ 2/INT 3/RPT 4/RDM
Source
Press SOURCE Button to
display source selection
menu.
Step 1
Rotate Selector Knob
to choose a source
or settings.
Press Selector Knob (once) to
complete source selection menu.
Step 3
Step 2
1/ 2/INT 3/RPT 4/RDM
Source
Source
Note: On USB source, the unit “auto selects” USB input whenever a device
is plugged in. All other sources must be selected by the user. When select-
ing Bluetooth, a device must be rst paired to playback audio.
9
AM/FM Conguration
Several congurable AM/FM radio parameters are available.
● Select between AM or FM on the Source Menu wheel. Each has its
own menu.
● Once the chosen source is selected, press and hold the SOURCE
button for 2 seconds. The AM or FM menu will appear (whichever
source is selected).
● Use the source menu selector knob to scroll to the chosen
parameter. Press the center of the knob to either adjust the parameter
directly, or enter the sub-menu and adjust by scrolling and pressing
the center of the knob again.
● A complete list of each paramater and its variables is listed on the
following page.
● Use the SOURCE button to go back to the previous screen.
● Continue using the SOURCE button to exit AM or FM setup.
1/ 2/INT 3/RPT 4/RDM
Source
After selectingAM or FM source, press
and hold SOURCE button for 2 seconds
to enter theAM or FM Settings menu.
Use the Menu Selector Knob to navigate
the menu items.
Press and Hold
(2 seconds).
10
AM/FM Conguration
Settings Choices for AM
● PRESETS - This function shows stored AM presets 1-6 on AM1 or
AM2. Only presets 1-4 have front panel quick access buttons without
using this menu.
● SAVE PRESETS - This function stores AM presets in spaces 1-6.
Only presets 1-4 have front panel quick access buttons.
● RADIO REGION - This function specices the region: EUROPE,
USA1, USA 2, JAPAN or RUSSIA. This function also controls FM
RADIO REGION setting simultaneously and will reset the clock. USA1
is recommended for USA.
● LOCAL - This function lters out weaker signals when ON to limit only
strong stations in seek feature. Choose OFF when signals have with
adequate reception. Also controls FM LOCAL setting.
● AM BAND - This function selects AM1 or AM2 bands. Choose and
store and recall AM presets. 6 on AM1, 6 on AM2.
● AUTO STORE - Automatically searches and stores presets in
memory.
● STEREO - Choose STEREO or MONO. Recommended to set to
MONO for AM as AM radio signal is broadcast in mono.
Settings Choices for FM
● PRESETS - This function shows stored FM presets 1-6 on FM1, FM2
or FM3. Only presets 1-4 have front panel quick access buttons without
using this menu.
● SAVE PRESETS - This function stores FM presets in spaces 1-6.
Only presets 1-4 have front panel quick access buttons.
● RADIO REGION - This function specices the region: EUROPE,
USA1, USA 2, JAPAN or RUSSIA. This function also controls AM
RADIO REGION setting simultaneously and will reset the clock. USA1
is recommended for USA.
● LOCAL - This function lters out weaker signals when ON to limit only
strong stations in seek feature. Also controls AM LOCAL setting.
● FM BAND - This function selects between FM1, FM2 or FM3 bands.
Choose and store and recall FM presets. 6 each on FM1, FM2 & FM3.
● AUTO STORE - Automatically searches and stores presets in
memory.
● STEREO - Choose STEREO or MONO. Recommended to set to
STEREO for FM as FM radio signal is broadcast in stereo.
.
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