Dual MXD337BT Operating instructions

INSTALLATION/OWNER'S MANUAL
AM/FM Marine Receiver with Bluetooth and Fixed Face
MXD337BT

2
MXD337BT INSTALLATION
Preparation
Please read entire manual before installation.
Before You Start
• Disconnect negative battery terminal. Consult a qualified technician for instructions.
• Avoid installing the unit where it would be subject to high temperatures, such as from
direct sunlight, or where it would be subject to dust, dirt or excessive vibration.
Getting Started
•
Remove trim ring from unit.
•
Insert the supplied keys into the slots as shown, and slide the unit out of the
mounting
sleeve.
•
Install mounting sleeve into opening, bending tabs to secure.
•
Connect wiring harness and antenna. Consult a qualified technician if you are unsure.
•
Certain vehicles may require an installation kit and/or wiring
harness adapter (sold separately).
•
Test for correct operation and slide into mounting sleeve to secure.
•
Snap trim ring into place.
TYPICAL FRONT-LOAD DIN MOUNTING METHOD

3
MXD337BT INSTALLATION
Wiring Diagram
FUSE
When replacing the
fuse, make sure new
fuse is the correct type
and amperage. Using
an incorrect fuse could
damage the radio.
The unit uses
one 10 amp AGC fuse
located beside
the Heat Sink
10 AMP
AGC Fuse

4
MXD337BT OPERATION
Control Locations
Preset 1 / Play/Pause
Display
Mode
Reset
Tune Up
Tune Down
Power
Band
Mute
Volume Knob
Automatically Store
USB Port
1 2 3 4 5
1
11
2
12
3
13
4
14
5
15
6
16
7
17
8
18
9
10
7
6
14 13 12 11 10 9 81718 1516
Auxiliary Input
Preset 6 / Folder Up
Preset 5 / Folder Down
Preset 4 / Random
Preset 3 / Repeat
Preset 2 / Intro
12
4
5
7
8
9
3
10
12
14
15
16 6
17
11
13
Preset 6 / Folder Up
Mute
AS/PS
Preset 5 / Folder Down
Preset 4 / Random
Preset 1 / Play / Pause
Bluetooth Talk
Tune Down
1
2
3
4
5
6
7
8
10
11
12
13
14
15
16
17
Mode
Volume Up
Power
Audio
Tune Up
Volume Down
Band
Preset 3 / Repeat
Preset 2 / Intro
9

5
MXD337BT OPERATION
Press the button to turn the unit on. Press again to
turn the unit off.
Press MODE to select between Radio, USB, Auxiliary Input
and Bluetooth. Modes of operation are shown in the display.
Adjust volume using the volume knob (00-43).
Press to silence the audio. Press again to resume listening
at the previously selected volume.
Insert a 3.5mm cable in the unit's front AUX port.
Press the RESET button to reset the unit back to the factory
settings if abnormal operation occurs. The reset button is
located on the front panel.
With the unit on, press DISP to display clock time. Press and
hold DISP until the hours begins to flash, then release.
Press the TUNE
nn
and TUNE
ll
to adjust the hours,
then press the DISP, the minutes begins to flash, press the
TUNE
nn
and TUNE
ll
button to adjust the minutes.
Press DISP momentarily to save the selected time.
Press DISP to toggle display between various displayed
information.
Press the volume knob momentarily to select between audio
functions.
Press and hold the volume knob for more than two seconds
to select between the menu functions.
Rotate the volume knob left/right to adjust or activate the
desired function/audio.
Power On/Off
Changing Modes
Volume
Mute
Auxiliary Inputs
Reset
Setting the Clock
Display
Audio / Menu
General Operation

6
MXD337BT OPERATION
AM/FM Tuner Operation
Seek Tuning
Manual Tuning
Band
Storing Presets
Recalling Presets
Automatically Store
Preset Scan Stations
Press TUNE
nn
or TUNE
ll
to seek to the previous or
next strong station.
Press and hold TUNE
nn
or TUNE
ll
to enter manual
tuning mode, then press TUNE
nn
or TUNE
ll
momentarily to change radio frequency up or down one
step at a time. Press and hold TUNE
nn
or TUNE
ll
to
advance quickly.
Press BAND to select between FM1, FM2, FM3, AM1 and
AM2 bands. Up to six presets can be programmed
for each band, enabling up to 18 FM stations and 12 AM
stations to be stored in memory.
Up to 18 FM and 12 AM stations can be stored. To store
a station, select the desired band and station. Press and
hold the desired preset button (1-6) for more than two
seconds. When stored, the preset number will appear in
the display.
Preset stations can be recalled any time by pressing the
corresponding preset button.
Press and hold AS/PS for more than 2 seconds to store
18 FM stations and 12 AM stations automatically.
Press AS/PS to recall each preset staion that stored in the
memories in each band.

7
MXD337BT OPERATION
To play MP3 files, insert a USB device containing MP3 files.
Press TUNE
ll
to skip to the beginning of the next track.
Press TUNE
nn
to skip to the beginning of the previous
track.
Press and hold TUNE
ll
or TUNE
nn
to fast forward or
reverse a track.
Press
l
/ II to temporarily stop USB playback.
Press
l
/ II again to resume playback.
Folders can be found by pressing Folder Up or Folder Down.
About one second after the folder name is displayed, the
first file under the selected folder will be displayed and
playback will begin.
Press RPT to toggle between RPT ALL and RPT ONE.
• RPT ALL - Plays all tracks on USB device.
• RPT ONE - Continuously repeats selected track.
Press RDM to play tracks in random order; press again to
cancel the RDM function.
Press INT to play the first 10 seconds of each track; press
again to cancel the INT function.
Playing MP3 Files
Track Select
Fast Forward
and Reverse
Pause
Folder Access
Repeat
Random
Intro
USB Operation

8
MXD337BT OPERATION
Preparation
Pairing a New
Device
Streaming Audio
Troubleshooting
Before using a Bluetooth device, it must be paired and
connected. Ensure that Bluetooth is activated on your
device before beginning the pairing process.
The head unit broadcasts the pairing signal constantly when
no devices are connected. Complete the pairing sequence
from your Bluetooth device. Refer to the owner’s manual for
your device for more details.
The device name is “Dual Media Player”.
The Bluetooth passcode is "1234”.
Note: The head unit can be in any mode of operation when
pairing is performed.
The head unit supports A2DP wireless streaming audio
from a Bluetooth mobile device directly to your head unit.
The following functions can be used to control the music:
• Press
ll
to skip to the next available audio track.
• Press
nn
to skip to the previous audio track.
• Press
l
/ II to toggle between play and pause during
playback.
Bluetooth Operation

9
MXD337BT OPERATION
Troubleshooting
Problem Cause Action
Unit will not turn on
(no power)
Yellow wire not connected or incorrect
voltage Red wire not connected or
incorrect voltage
Check connections for proper
voltage (11~16VDC)
Black wire not connected Check connection to ground
Fuse blown Replace fuse
Unit has power
(but no sound)
Speaker wires not connected Check connections at speakers
One or more speaker wires touching
each other or touching chassis ground
Insulate all bare speaker wires
from each other and chassis
ground
Unit blows fuses
Yellow or red wire touching chassis
ground Check for pinched wire
Speaker wires touching chassis ground Check for pinched wire
Incorrect fuse rating Use fuse with correct rating
NO FILE appears
on display
No playable MP3 files found
on the device
Check the device for valid
MP3 files
NO SUPPORT appears
on display An invalid ID3 tag version is present Version 1.0 to 2.0 ID3 tags are
supported.

10
MXD337BT OPERATION
Limited One Year Warranty
This warranty gives you specific legal
rights. You may also have other rights
which vary from state to state.
Dual Electronics Corp. warrants this
product to the original purchaser to be free
from defects in material and workmanship
for a period of one year from the date of
the original purchase.
Dual Electronics Corp. agrees, at our
option, during the warranty period,
to repair any defect in material or
workmanship or to furnish an equal
new, renewed or comparable product
(whichever is deemed necessary) in
exchange without charges, subject to
verification of the defect or malfunction and
proof of the date of purchase. Subsequent
replacement products are warranted for
the balance of the original warranty period.
Who is covered? This warranty is extended
to the original retail purchaser for products
purchased from an authorized Dual dealer
and used in the U.S.A.
What is covered? This warranty covers all
defects in material and workmanship in
this product. The following are not covered:
software, installation/removal costs,
damage resulting from accident, misuse,
abuse, neglect, product modification,
improper installation, incorrect line
voltage, unauthorized repair or failure
to follow instructions supplied with the
product, or damage occurring during
return shipment of the product. Specific
license conditions and copyright notices for
the software can be found via www.dualav.
com.
What to do?
1. Before you call for service, check the
troubleshooting guide in your owner’s
manual. A slight adjustment of any
custom controls may save you a service
call.
2. If you require service during the
warranty period, you must carefully
pack the product (preferably in the
original package) and ship it by prepaid
transportation with a copy of the original
receipt from the retailer to an
authorized service center.
3. Please describe your problem in
writing and include your name, a
return UPS shipping address (P.O. Box
not acceptable), and a daytime phone
number with your shipment.
4. For more information and for the
location of the nearest authorized
service center please contact us by one
of the following methods:
• Call us toll-free at 1-866-382-5476
• E-mail us at [email protected]
Exclusion of Certain Damages: This
warranty is exclusive and in lieu of any
and all other warranties, expressed or
implied, including without limitation the
implied warranties of merchantability and
fitness for a particular purpose and any
obligation, liability, right, claim or remedy
in contract or tort, whether or not arising
from the company’s negligence, actual
or imputed. No person or representative
is authorized to assume for the company
any other liability in connection with the
sale of this product. In no event shall the
company be liable for indirect, incidental or
consequential damages.

11
MXD337BT OPERATION
FCC Compliance
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 accept any interference received, including interference that may
cause undesired operation.
Warning: Changes or modifications to this unit not expressly approved by the party
responsible for compliance could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. 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
and used 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, which can be determined by turning the equipment off and on, 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 the separation between the equipment and receiver.
• Connect the equipment into 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.

12
MXD337BT OPERATION
Specifications
Tuning range: 87.5MHz-107.9MHz
Usable sensitivity: 8.5dBf
50dB quieting sensitivity: 10dBf
Stereo separation @ 1kHz: >30dB
Frequency response: 30Hz-13kHz
Tuning range: 530kHz-1710kHz
Usable sensitivity: <42dBu
Frequency response: 30Hz-2.2kHz
Speaker output impedance: 4~8 ohms
Line output voltage: 2 Volts RMS
Dimensions: 7" x 3.8" x 2" (178 x 97 x 50 mm)
Design and specifications subject to change without notice.
FM Tuner
AM Tuner
General
CEA-2006 Power Standard Specifications
(reference: 14.4VDC +/- 0.2V, 20Hz~20kHz)
Power Output: 16 Watts RMS x 4 channels at 4 ohms and <1% THD+N
Signal to Noise Ratio: 75dBA (reference: 1 watt into 4 ohms)

13
MXD337BT OPERATION
Notes

Dual Electronics Corp.
Toll Free: 1-866-382-5476
www.dualav.com
©2016 Dual Electronics Corp. All rights reserved.
Other trademarks and trade names are those of their respective owners.
NSA1116-V01