MXD337BT - Radio DUAL - Free user manual and instructions

Product Type	AM/FM Marine Receiver with Bluetooth and Fixed Face
Model	MXD337BT
Brand	Dual
Dimensions (W x H x D)	7" x 3.8" x 2" (178 x 97 x 50 mm)
Weight	Approx. 1.5 lbs (0.68 kg)
Power Output (RMS)	16 Watts x 4 channels at 4 ohms, <1% THD+N
Bluetooth	Yes, A2DP wireless streaming; device name "Dual Media Player", passcode "1234"
USB Playback	Yes, supports MP3 files, folder navigation
Auxiliary Input	Front 3.5mm AUX port
FM Tuner Range	87.5 MHz - 107.9 MHz
AM Tuner Range	530 kHz - 1710 kHz
Preset Stations	18 FM + 12 AM
Display	LCD display with clock, mode, and track info
Mounting Type	DIN (front-load or ISO mount)
Fuse Rating	10 Amp AGC (located beside heat sink)
Speaker Impedance	4 - 8 ohms
Line Output Voltage	2 Volts RMS
Warranty	Limited 1 Year (original purchaser)
Other Features	Mute, random/repeat/intro playback, auto store, preset scan, reset button

Frequently Asked Questions - MXD337BT DUAL

How do I pair my phone with the Dual MXD337BT?

Ensure Bluetooth is enabled on your phone. The head unit broadcasts a pairing signal when no devices are connected. On your phone, search for devices and select "Dual Media Player". Enter the passcode 1234 (if that fails, try 0000). The unit can be in any mode during pairing.

Why is there no sound from the speakers?

Check that speaker wires are properly connected and not touching each other or chassis ground. Also verify that the unit is not muted and volume is turned up. If using an external amplifier, ensure the blue remote turn-on wire is connected.

How do I reset the unit to factory settings?

Press the RESET button located on the front panel. This will restore factory defaults. Use this if the unit behaves abnormally.

Can I play music from a USB drive?

Yes, insert a USB device containing MP3 files. The unit supports folder navigation. Use Folder Up/Down buttons to browse folders. Press ▶▶ or ◀◀ to skip tracks.

How do I set the clock?

Press DISP to show clock time, then press and hold DISP until the hours flash. Use TUNE ◀◀ and TUNE ▶▶ to adjust hours, then press DISP again to adjust minutes. Press DISP momentarily to save.

What should I do if the unit blows fuses?

Check for pinched or shorted wires: yellow or red wire touching chassis ground, or speaker wires touching ground. Ensure the replacement fuse is the correct type: 10 Amp AGC.

How do I store radio stations?

Select the desired band (FM1, FM2, FM3, AM1, AM2) and tune to the station. Press and hold one of the preset buttons (1-6) for more than 2 seconds. The preset number appears on the display.

Why does the display show 'NO FILE'?

The USB device does not contain any playable MP3 files. Ensure the device has valid MP3 files in a compatible format.

Can I use the unit in a marine environment?

Yes, the MXD337BT is a Marine Receiver designed for use in boats and other marine applications. However, avoid direct exposure to water and extreme temperatures.

How do I activate Bluetooth streaming audio?

After pairing, select Bluetooth mode by pressing MODE. From your phone, play music and it will stream via A2DP. Use the unit's controls: ▶▶ next track, ◀◀ previous track, ▶/III play/pause.

USER MANUAL MXD337BT DUAL

MXD337BT

INSTALLATION/OWNER'S MANUAL

AM/FM Marine Receiver with Bluetooth and Fixed Face

MP3

USB

AUX

Bluetooth®

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.

Technical line drawing of an electronic device chassis with internal components and mounting brackets (no text or symbols)

TYPICAL FRONT-LOAD DIN MOUNTING METHOD

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

Control Locations

① Power
② Band
③ Mute
④ Volume Knob
⑤ Automatically Store
6 USB Port

⑦ Auxiliary Input
⑧ Preset 6 / Folder Up
⑨ Preset 5 / Folder Down
10 Preset 4 / Random
⑪ Preset 3 / Repeat
12 Preset 2 / Intro

⑬ Preset 1 / Play/Pause
14 Display
15 Mode
16 Reset
17 Tune Up
18 Tune Down

① Mode
② Volume Up
③ Power
4 Audio
⑤ Tune Up
6 Volume Down
⑦ Band
⑧ Preset 3 / Repeat
⑨ Preset 2 / Intro

10 Preset 6 / Folder Up
11 Mute
12 AS/PS
13 Preset 5 / Folder Down
14 Preset 4 / Random
15 Preset 1 / Play / Pause
⑯ Bluetooth Talk
⑰ Tune Down

General Operation

Power On/Off	Press the button to turn the unit on. Press again to turn the unit off.
Changing Modes	Press MODE to select between Radio, USB, Auxiliary Input and Bluetooth. Modes of operation are shown in the display.
Volume	Adjust volume using the volume knob (00-43).
Mute	Press to silence the audio. Press again to resume listening at the previously selected volume.
Auxiliary Inputs	Insert a 3.5mm cable in the unit's front AUX port.
Reset	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.
Setting the Clock	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 ◀◀ and TUNE ▶▶ to adjust the hours, then press the DISP, the minutes begins to flash, press the TUNE ◀◀ and TUNE ▶▶ button to adjust the minutes.
	Press DISP momentarily to save the selected time.
Display	Press DISP to toggle display between various displayed information.
Audio / Menu	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.

AM/FM Tuner Operation

Seek Tuning	Press TUNE ◀◀ or TUNE ▶▶ to seek to the previous or next strong station.
Manual Tuning	Press and hold TUNE ◀◀ or TUNE ▶▶ to enter manual tuning mode, then press TUNE ◀◀ or TUNE ▶▶ momentarily to change radio frequency up or down one step at a time. Press and hold TUNE ◀◀ or TUNE ▶▶ to advance quickly.
Band	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.
Storing Presets	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.
Recalling Presets	Preset stations can be recalled any time by pressing the corresponding preset button.
Automatically Store	Press and hold AS/PS for more than 2 seconds to store 18 FM stations and 12 AM stations automatically.
Preset Scan Stations	Press AS/PS to recall each preset station that stored in the memories in each band.

USB Operation

Playing MP3 Files

Track Select

To play MP3 files, insert a USB device containing MP3 files.

Press TUNE ▶▶ to skip to the beginning of the next track. Press TUNE ◀◀ to skip to the beginning of the previous track.

Fast Forward and Reverse

Pause

Press and hold TUNE ▶▶ or TUNE ◀◀ to fast forward or reverse a track.

Press ▶/Ⅲ to temporarily stop USB playback. Press ▶/Ⅲ again to resume playback.

Folder Access

Repeat

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.

Random

Intro

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.

Bluetooth Operation

Preparation	Before using a Bluetooth device, it must be paired and connected. Ensure that Bluetooth is activated on your device before beginning the pairing process.
Pairing a New Device	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.
Streaming Audio Troubleshooting	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 ▶▶ to skip to the next available audio track.Press ◀◀ to skip to the previous audio track.Press ▶/■ to toggle between play and pause during playback.

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.

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 [e-mail]

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.

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.

Specifications

FM Tuner

Tuning range: 87.5MHz-107.9MHz

Usable sensitivity: 8.5dBf

50dB quieting sensitivity: 10dBf

Stereo separation @ 1kHz: >30dB

Frequency response: 30Hz-13kHz

AM Tuner

Tuning range: 530kHz-1710kHz

Usable sensitivity: <42dBu

Frequency response: 30Hz-2.2kHz

General

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.

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)

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

Quick Start Guide

Digital Media Receiver

To download the complete, model-specific manual, please visit www.dualav.com/support/manuals.php or call 1-866-382-5476, 9AM-5PM EST (Monday-Friday).

Installation

Before You Start

• Consult a qualified technician for instructions. Dual always recommends professional installation.
• Disconnect negative battery terminal.
• Remove trim ring from unit (if installed).
• Remove 2 transit screws located on top of the unit (if applicable).
• Insert the removal keys, and remove the mounting sleeve from the head unit.

Note: Most vehicles require an installation kit, wiring harness and/or antenna adapter (all sold separately) to properly install the head unit in the vehicle.

Installation Process

1. Carefully remove the existing head unit.
2. Connect wiring harness. Consult a qualified technician if you are unsure.
3. Mount the head unit using the mounting sleeve or ISO brackets (depending on your vehicle's dashboard).
4. Connect wiring harness and antenna. Test the head unit for correct operation.
5. Slide into mounting sleeve to secure, or mount the ISO brackets to the vehicle.
6. Snap trim ring into place.

Wiring Connections

The chart below the connection for each wire in the wiring harness.

Color	Connection
Red	12V Ignition / Accessory
Yellow	12V Battery / Memory
Black	Ground
Blue	Power Antenna / Amp Turn-on
White	Left Front (+)
White/Black	Left Front (-)
Gray	Right Front (+)
Gray/Black	Right Front (-)
Green	Left Rear (+)
Green/Black	Left Rear (-)
Violet	Right Rear (+)
Violet/Black	Right Rear (-)

Tip:When a suitable ground wire is not present in the vehicle wiring harness, connect the black ground wire to the vehicle chassis.

Fuse:When replacing the fuse, make sure new fuse is the correct type and amperage. Using an incorrect fuse could damage the radio.

Mounting the Head Unit: Typical DIN mounting

Step 1: Insert the mounting sleeve into the installation kit or dashboard.

Step 2:

Bend multiple mounting tabs around the mounting sleeve until the mounting sleeve is secure.

Dashboard or Installation Kit

Step 3:

Connect all wiring harnesses and slide the head unit into the mounting sleeve until it clicks into place.

Mounting the Head Unit: ISO mounting

Using the existing brackets or the brackets supplied with the installation kit, mount the brackets to the sides of the head unit with the screws supplied with the head unit.

General Operation

Power On/Off	Press the ⏻ button to turn the unit on. Press ⏻ again to turn unit off.
Changing Modes	Press MODE to select between Radio, USB, Bluetooth, AUX.Modes of operation are shown in the display.
Volume	Adjust volume using volume knob.
Mute	Press ⏻ to silence the audio. Press ⏻ again to resume listening at the previously selected volume.
Auxiliary Inputs	Insert a 3.5mm cable in the units front AUX port.
Reset	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.
Setting the Clock	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 ◀ and TUNE ▶▶ to adjust the hours, then press the DISP, the minutes begins to flash, press the TUNE ◀ and TUNE ▶▶ button to adjust the minutes. Press DISP momentarily to save the selected time.
Display	Press DISP to toggle display between various displayed information.
Audio / Menu	Press volume knob momentarily to select between the audio functions. Press and hold 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.

To download the complete Owner's Manual for your radio, please visit www.dualav.com/support/manuals.php.

AM/FM Tuner Operation

Seek Tuning	Press TUNE ◀◀ or TUNE ▶▶ to seek to previous or next strong station.
Manual Tuning	Press and hold the TUNE ◀◀ or TUNE ▶▶ to enter manual tuning mode. Then press TUNE ◀◀ or TUNE ▶▶ momentarily to move radio frequency down or up one step at a time. Press and hold TUNE ◀◀ or TUNE ▶▶ to advance quickly.
Band	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.
Storing Presets	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.
Recalling Presets	Preset stations can be recalled any time by pressing the corresponding preset button.
Auto store	Press and hold AS/PS for more than 2 seconds to store 18 FM stations and 12 AM stations automatically.
Preset Scan	Press the AS/PS to recall each preset staion that stored in the memories in each band.

To download the complete Owner's Manual for your radio, please visit www.dualav.com/support/manuals.php.

USB Operation

Playing MP3 Files	To play MP3 files, insert a USB device containing MP3 files.
Track Select	Press TUNE ▶▶ to skip to the beginning of the next song. Press TUNE ◀◀ to skip to the beginning of the previous song.
Fast Forward and Reverse	Press and hold TUNE ▶▶ or TUNE ◀◀ to fast forward or reverse a track.
Pause	Press ▶/ || to temporarily stop playback. Press ▶/ || again to resume playback.
Folder Access	Folder can be found by pressing Folder Up or Folder Down. About 1 second after the folder name is displayed, the first file under the selected folder will be displayed and playback.
Repeat	Press RPT to toggle between RPT ALL and RPT ONE. • RPT ALL - Plays all tracks on USB device. • RPT ONE - Continuously repeats selected track.
Random	Press RDM to play tracks in random order, press again to cancel the RDM function.
Intro	Press INT to plays first 10 seconds of each track, press again to cancel the INT function.

To download the complete Owner's Manual for your radio, please visit www.dualav.com/support/manuals.php.

Bluetooth® Operation\*

Preparation

Pairing a New Device

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: If passcode "1234" does not pair your device to the receiver, use passcode "0000".

Note: The head unit can be in any mode of operation when pairing is performed.

Streaming Audio Troubleshooting

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 ▶▶ to skip to the next available audio track.
• Press ◀◀◀ to skip to the previous audio track.
• Press ▶/Ⅲ to toggle between play and pause during playback.

* Not available on all models. To download the complete Owner's Manual for your radio, please visit www.dualav.com/support/manuals.php.

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. (Note that select marine products carry a 2-year warranty. Please visit www.dualav.com for details.) 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 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: 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.

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 toll-free at 1-866-382-5476 or by email at [e-mail].

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.

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 technician for help.

Dual Electronics Corp. Toll Free: 1-866-382-5476 Monday-Friday. 9AM-5PM www.dualav.com

©2019 Dual Electronics Corp. All rights reserved.

The Bluetooth® word mark and logos are owned by the Bluetooth SIG, Inc. and any use of such marks by Namsung is under license. Other trademarks and trade names are those of their respective owners.

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