Dual MGH25BT User Manual

MGH25BT

Front and Rear Inputs

INSTALLATION/OWNER'S MANUAL

AM/FM Gauge Hole Receiver

MGH25BT INSTALLATION

Mounting

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

• Once a suitable location has been determined, drill the hole and secure the stereo
using the metal mounting bracket. If the bracket needs to be shortened, remove the
appropriate number of breakaway segments using a pair of pliers.

Color Connection

Red 12V Ignition / Accessory

Black Ground

Blue Remote Turn-on B (+)
Grey Right Front (+)

Grey/Black Right Front (-)

White Left Front (+)

White/Black Left Front (-)

Violet Right Rear (+)

Violet/Black Right Rear (-)

Green Left Rear (+)

Green/Black Left Rear (-)

2

Break Lines

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.

MGH25BT INSTALLATION 

Installation

Installation

C

A

3 Inch Hole

Mounting the Radio

1. Choose a mounting location on the dash board or instrument panel that will
allow room behind to run radio cables to the power source. Consider how you will use
the AUX IN, LINE OUT and USB connectors and route the appropriate extension cables
to an accessible area.

2. Cut a hole in the dash board using the template provided in the back of this manual. At
least 3 3/4” depth is needed to mount the radio.

IMPORTANT! Do not mount this unit where it can be submerged in water.

D

B

E

3. Slide the included spring washers (B) over the screw posts (A) and attach the screw
posts to the back of the radio.

4. Place the radio in front of the dashboard opening so the wiring can be brought through
the opening.

5. After completing the wiring connections, turn the radio on to confirm operation (vehicle
accessory switch must be on). If the radio does not operate, recheck all wiring until the
problem is corrected. Once proper operation is achieved, turn the accessory switch off
and proceed with final mounting of the radio. Refer to the “Wiring Diagram” on page 5.

NOTE: Before final installation, test the wiring connections to make sure the unit is con­nected properly and the system works.

6. Insert the radio into the mounting hole.

7. Place the “U” bracket (C) over the screw posts and secure the radio to the dash using
the included hex nuts (D). If necessary, cut the score marks (E) on either side of the
mounting bracket to custom fit the bracket length for your application. See Figure A.

3

MGH25BT OPERATION

Wiring

USBØ5(BLACK)

ANTØ3(BLACK)

2P RCA CABLE(GRAY)

FUSE

2P RCA CABLE(YELLOW)

WHITE MOLDING

RED MOLDNNG

WHITE MOLDING

RED MOLDNNG

USB
ANT

REAR LINE OUT

AUX

PHONE JACK(Ø3.5)
STEERING WHEEL

4

MGH25BT OPERATION

Control Locations 

4

3

2

1

11

10

9

1

17

16

15

14

13

12

2

3

4

5

6

7

8

9

10

11

5

8

Mode

1

Volume Up

2

Power

3

Select

4

Tune / Track Up

5

Volume Down

6

Audio / Menu

7

Preset 3 / Intro

8

Preset 2 / Random

9

6

7

Power

1

Mute

2

Band / Go Back / Display

3

Tune Down

4

Tune Up

5

Play / Pause

6

Select / Thumbs Up

7

Volume Up

8

Volume Down

9

Mode / Thumbs Down

10

Audio / Menu

11

Preset 6 / Folder Up

10

Display

11

Mute

12

Preset 5 / Folder Down

13

Preset 4 / Play / Pause

14

Preset 1 / Repeat

15

Band / Go Back

16

Tune / Track Down

17

5

MGH25BT OPERATION

General Operation

Power On/Off

Mode

Auxiliary Inputs

Volume

Display

Reset

Setup Menu

Press or any other button (except EJECT) to turn the unit
on. Press to turn the unit off.

Press MODE to select between AM/FM, auxiliary front/rear,
USB, operation of iPod®/iPhone® Bluetooth and Pandora.
Modes of operation are shown in the display.

NOTE: USB and operation of iPod modes will not appear
unless a USB/iPod device is connected.

The MGH25BT offers rear RCA auxiliary input ports for
connecting an audio device, MP3 player, etc. Press MODE to
select auxiliary input mode.

Adjust volume using the VOL+ or VOL- buttons (00-46).

Press DISP to select between clock and different types of
information, such as radio frequency or MP3/WMA song
information.

If abnormal operation occurs, press MENU and TUNE
for three seconds to reset the unit to default factory settings.

Press and hold AUDIO/MENU for more than 3 seconds to
access the setup menu. Press AUDIO/MENU momentarily
to select between the menu functions and use the VOL+ or
VOL- buttons to adjust or activate the desired function.

nn

6

MGH25BT OPERATION

General Operation - Setup Menu

Menu Function Options Action

Auto Station 

Store

Local/Distance 

Tuning

Tuner

Frequency

Spacing

Selectable iPod 

Control

Loudness

Beep 

Confirmation

Programmable 

Turn On Volume

Power on 

Message

Scrolling 

Option

Illumination 

Dimmer

Demonstration 

Mode

AUTO STORE

LOCAL OFF Activates distance tuning (Tuner mode only).

LOCAL ON

FREQ USA

FREQ EURO

IPOD FULL

IPOD BASIC

LOUD OFF

LOUD ON Activates the Loudness feature.

BEEP OFF Disables the confirmation beep.

BEEP ON

PRO-VOL #

MESSAGE OFF Disables power on message. (example: GOOD MORNING)

MESSAGE ON Enables power on message to be displayed.

SCROLL 15 S

SCROLL ONCE

SCROLL ON Programs unit to scroll continuously.

SCROLL OFF Programs unit to show the first 10 characters on the display.

DIMMER HIGH Programs unit to the brightest illumination level.

DIMMER MED Programs unit to the middle illumination level.

DIMMER LOW Programs unit to the dimmest illumination level.

DEMO OFF Disables the demonstration mode.

DEMO ON Enables the demonstration message.

Press SELECT to seek and save 6 strong stations in the
current band. (Tuner mode only)

Activates local tuning for strong station reception only (Tuner 
mode only).

Programs the unit to USA tuner spacing.
(200kHz for FM and 10kHz for AM). (Tuner mode only)

Programs the unit to European tuner spacing.
(50kHz for FM and 9kHz for AM). (Tuner mode only)

Programs the head unit to advanced control of the iPod/
iPhone device.

Programs the head unit to manual control of the iPod/iPhone
device and allows music to be controlled from the iPod/
iPhone device.

Deactivates the Loudness feature, which increases bass and
treble levels at low volume.

Enables the confirmation beep.

Programs unit to always turn on at a specific volume
(default is OFF). Any volume level 1-46 can be selected.

Programs unit to scroll information once every 15 seconds
(default).

Programs unit to scroll once, then show the first 10
characters on display.

7

MGH25BT OPERATION

General Operation

Audio

Bass

Middle

Treble

Balance

Fader

Loudness

EQ

Source Volume Level

Press AUDIO/MENU momentarily to select between Bass,
Middle, Treble, Balance, Fader, Loudness, EQ and Source
Volume Level.

BASS TREBLE BALANCE FADER EQ LOUD SOURCE LEVEL

Press AUDIO/MENU until BASS appears then press VOL+ or
VOL- to adjust ( -6 minimum / +6 maximum).

Press AUDIO/MENU until MIDDLE appears then press VOL+
or VOL- to adjust ( -6 minimum / +6 maximum).

Press AUDIO/MENU until TREBLE appears then press VOL+
or VOL- to adjust ( -6 minimum / +6 maximum).

Press AUDIO/MENU until BAL appears then press VOL+ or
VOL- to adjust

BAL EVEN represents equal balance.

Press AUDIO/MENU until FADER appears then press VOL+
or VOL- to adjust (FADER FRONT 12 - FADER REAR 12).
FADER EVEN represents equal fader.

Press AUDIO/MENU until LOUD appears then press VOL+ or
VOL- to turn the Loudness feature ON or OFF.

Press EQ, then then press VOL+ or VOL- to cycle through
the following equalization curves: USER, ROCK, BEAT,
CLASSIC, JAZZ, POP or FLAT. Any manual adjustment to the
Bass or Treble settings are automatically saved as USER.

The source volume level control allows a gain adjustment
for each audio source. Set the source volume level for each
mode, depending on the relative volume of each audio
source.

(BAL LEFT 12 - BAL RIGHT 12).

To set the source volume level, press AUDIO/MENU until
SRC LEVEL appears. After one second, the current mode
will appear on the display. Press VOL+ or VOL- to adjust
the audio level of the current source (-6 minimum/+6
maximum).

Note: Only the current mode will be available for
adjustment. To adjust another mode of operation, press
MODE until the desired mode is selected, then set the
source volume level for that mode.

8

MGH25BT OPERATION

AM/FM Tuner Operation

Seek Tuning

Manual Tuning

Band 

Manually Storing 

Preset Stations

Automatically Store 

Preset Stations

Recalling 

Preset Stations

Press TUNE
to seek to the next strong station.

Press TUNE
radio frequency up or down one step at a time. Press and
hold to advance quickly.

Press BAND to select between FM1, FM2, FM3, AM1 and
AM2 bands.

Up to 18 FM stations and 12 AM stations can be stored.
To manually store a station, select the desired band and
station. Press and hold Play/Pause for more than two
seconds, then press Volume Up to step through preset
numbers one through six. When the desired preset number
is reached, press SELECT to save the selection.

Press Audio/Menu, and "Auto Pgm Stations" will appear
in the display. Press SELECT to confirm. The unit will
automatically scan and store the six strongest stations in
the current band as presets.

Once stations have been saved, press Play/Pause to step
through each preset station.

or TUNE 

nn

or TUNE 

nn

for more than one second

ll

momentarily to change

ll

9

MGH25BT OPERATION

USB Operation 

Connecting a USB Device

(sold separately)

Playing Music

Track Select

Fast Forward and 

Reverse

Pause

File Search

Step 1

Step 2

To play MP3/WMA files from most USB mass storage
devices, line up the USB connector and insert the USB
device into the MGH25BT's USB port.

When a USB device is first connected, “USB READ” will
appear in the display and playback will begin momentarily.
Depending on the number of files and folders, it may take
several seconds for the device to begin playing. If no valid
MP3/WMA files are detected, “NO FILE” will be displayed
and the last mode will be resumed.

Press TRACK 
track. Press TRACK
current track. Pressing TRACK
beginning of the previous track.

Press and hold TRACK 
forward or reverse a track.

Press
Press

Press SELECT to enter the file/folder search mode. A list of
all the folders from the USB device will be displayed.

Note: Any files located in the root directory will be located in
the folder named "ROOT". Press SELECT to view the files on
the root folder.

Use the VOL+ or VOL- buttons to cycle through all the

folders on the device and press SELECT to choose the
desired folder. The list of files in the selected folder will be
displayed. Use the VOL+ or VOL- buttons to cycle through
the list of files.

/ II to temporarily stop USB playback.

l

/ II again to resume playback.

l

to skip to the beginning of the next

ll

to return to the beginning of the

nn

ll

or TRACK

again skips to the

nn

nn

to fast

10

Step 3

Note: Pressing GO BACK when viewing the contents of a

folder will return to the list of folders on the USB device.
Press GO BACK again to exit the search menu.

Once the desired song is displayed, press SELECT to begin
playback of the desired song.

Note: Due to differences in USB device transfer speeds, it is
recommended to limit each folder to less than 30 songs.

MGH25BT OPERATION

USB Operation

Displaying Information

Song Title Icon 

Artist Icon 

Folder Icon    

File Icon 

Folder Access 

Repeat

Random

When a file is accessed, the clock and elapsed time will be
displayed. Press DISP momentarily to select beween song
title, artist, file name, folder name, track number and clock/
elapsed time.

"NO TITLE" will be displayed if no song title information is
available.

"NO ARTIST" will be displayed if no artist information is
available.

This icon will illuminate when the song title is displayed.

This icon will illuminate when the artist name is displayed.

This icon will illuminate when the folder name is displayed.

This icon will illuminate when the file name is displayed.

Press to select the previous folder.
Press to select the next folder.

Note: Folder access is only available on devices with more
than one folder.

Press RPT to enter the Repeat menu, then use the VOL+ or
VOL- buttons to select one of the following options:

• ALL - Plays all tracks on the device.

• TRACK - Continuously repeats selected track.

• FOLDER - Continuously repeats all files in selected folder.

Press RDM to enter the Random menu, then use the VOL+ or
VOL- buttons to select one of the following options:

• OFF - Cancels the RDM function.

• ALL - Plays all tracks in random order.

• FOLDER - Plays all tracks in folder in random order.

Intro

Note: Random mode is retained in memory when selecting

between other modes and when the unit is turned on/off.

Press INT to enter the Intro menu, then use the VOL+ or VOL-
buttons to select one of the following options:

• OFF - Cancels the INT function.

• ALL - Plays first 10 seconds of each track.

• FOLDER - Plays first 10 seconds of each track in folder.

11

MGH25BT OPERATION

USB Operation 

Character Support

Media Compatibility

Playback Order

Playback Capacity

Maximum character display information

• Track name – 32 character maximum

• Directory name – 32 character maximum

• *Song title – 32 character maximum

• *Artist name – 32 character maximum

*Song title and artist name will only be displayed if included
with the MP3/WMA file.

The following types of files are compatible:

• MP3 data

• WMA data

The following types of files are not compatible:

• WMA files that are protected by DRM (Digital Rights
Management).

• WMA lossless format

• MP3 PRO format

• MP3 playlists

• WAV format

MP3/WMA playback sequence is based on order the files
are copied to the USB device and begins in the root folder.
Any empty folders or folders that do not include MP3/WMA
files are skipped. Depending on your software, the playback
order may vary.

• Maximum number of files: 50,000

• Maximum number of folders: 255 plus the root directory

• Maximum number of files in each folder and root: 50,000

USB Device Compatibility

12

Note: If the number of files/folders exceeds the maximum
outlined above, the additional files/folders will be ignored.

Note: Devices that exceed the maximum number of files or
folders may not function properly.

Due to the differences of USB devices, some devices may
not be compatible. USB devices must be ‘mass storage
class’ and formatted to the FAT or FAT32 file system in
order to ensure compatibility.

MGH25BT OPERATION

USB Operation

Additional MP3/WMA 

Information

Sampling Frequency Rates

MP3

WMA

Transfer Bit rates

MP3

WMA

MP3 Tag Display

Only MP3 files with filename extension (.mp3) can be played.
Only WMA files with filename extension (.wma) can be played.
Do not attempt to play non-MP3/WMA files with the MP3/WMA
extension.

8kHz ~ 48kHz

32kHz ~ 48kHz

32kbps ~ 320kbps constant
Variable bit rates

32kbps ~ 192kbps constant
Variable bit rates

Note: Some files may not play or be displayed correctly,
depending on sampling rates and bit rates.

ID3 tags Version 1.0 to 2.4

Note: If an invalid ID3 tag version is detected, "NO SUPPORT"
will scroll on the display.

13

MGH25BT OPERATION

Operation of iPod/iPhone

Connecting an  iPod/iPhone Device

USB Connection

Using the "dock connector to USB" sync cable (provided
with the iPod/iPhone device), plug the USB cable into the
MGH25BT's USB port. Once connected, playback will begin
automatically.

Controlling a  Device: Full Control

When the control of iPod/iPhone feature is set to "FULL" in the iPod Menu, use the 
following functions to control the device:

    Song Select

  Fast Forward and 

Reverse

Pause

Repeat

Press

nn
nn

Press and hold
song.

Press
Press

Press RPT to enter the Repeat menu, then use the VOL+ or
VOL- buttons to select one of the following options:

• ALL - Repeats all tracks.

• SONG - Repeats selected track.

to skip to the beginning of the next song. Press

ll

to return to the beginning of the current song. Pressing
again skips to the beginning of the previous song.

or

ll

/ II to temporarily stop playback.

l

/ II again to resume playback.

l

to fast forward or reverse a

nn

14

Random

Intro

Press RDM to enter the Random menu, then use the VOL+
or VOL- buttons to select one of the following options:

• OFF - Cancels the RDM function.

• ALL - Plays all tracks in random order.

• ALBUM - Plays all tracks in the selected album in
random order.

Press INT to enter the Intro menu, then use the VOL+ or
VOL- buttons to select one of the following options:

• OFF - Cancels the INT function.

• ON - Plays first 10 seconds of each track.

MGH25BT OPERATION

Operation of iPod/iPhone

Music Search Menu: Full Control 

The MGH25BT features a powerful music search that simplifies the searching process. 
Follow the steps below to find the desired song:

Begin Searching

Select a Category

Search Category

Artists

Albums

Songs

Playlists

Podcasts

Audiobooks

Finding a Song

Playing a Song

Step Backwards

Press SELECT to begin the search. The main search menu
will appear.

Use the VOL+ or VOL- buttons to select between artists,

albums, songs, playlists, podcasts and audiobooks. Press
SELECT to select the desired search category. Most search

categories have subcategories to navigate through. See the
table below for details.

Menu Navigation

Menu

Menu Albums Songs

Menu Songs

Menu Playlists Songs

Menu Podcasts

Menu

Artists Albums Songs

Audiobooks

Once the search category (and subcategories) are selected,
use the VOL+ or VOL- buttons to navigate to the desired
song/podcast/audiobook.

Press SELECT with the desired song name highlighted to
begin playback.

Press GO BACK to return to the previous menu, or exit the
search menu when the main menu is shown.

Important Note: Once a specific category is selected, the
iPod/iPhone device playback will be limited to that category
until another category is selected in the search menu.

15

MGH25BT OPERATION

(LINE 1)

ELAPSED TIME

TRACK NUMBER

SONG TITLE

SONG TITLE

(LINE 2)

Operation of iPod/iPhone

Displayed Information: Full Control

Displaying Information

Character Support

Press DISP momentarily to select file/folder name (default),
song title/artist, track number/clock & elapsed time.

ARTIST

Maximum character display information

• *Song Title – 32 character maximum

• *Artist Name – 32 character maximum

• *Album Name - 32 character maximum

*Song Title, Artist Name and Album Name will only be
displayed if included with the file.

ALBUM

CLOCK

TOTAL TRACKS

Controlling a  Device: Basic Control

When the control of iPod/iPhone feature is set to "BASIC" in the iPod Menu, use the 
following functions to control the device:

Manual Control for iPod

Control Functions

When "BASIC" control is selected from the iPod Menu, the
iPod or iPhone device can be controlled directly from the
device's interface. All functions except for volume can be
used from the iPod or iPhone device.

In addition to manual control of the iPod/iPhone device, the
following basic functions are still active:

16

 Song Select

Pause

Volume

Press

nn
nn

Press
Press

When playing an iPod device, the volume is adjustable using
the VOL+ or VOL- buttons

to skip to the beginning of the next song. Press

ll

to return to the beginning of the current song. Pressing
again skips to the beginning of the previous song.

/ II to temporarily stop playback.

l

/ II again to resume playback.

l

MGH25BT OPERATION

Operation of iPod/iPhone

Device Compatibility

Made for

• iPod touch (4th generation)

• iPod nano (6th generation)

• iPod touch (3rd generation)

• iPod nano (5th generation)

• iPod touch (2nd generation)

• iPod nano (4th generation)

• iPod classic

• iPod touch (1st generation)

• iPod nano (3rd generation)

• iPod nano (2nd generation)

• *iPod nano (1st generation)

• *iPod with video

• iPhone 4

• iPhone 3GS

• iPhone 3G

• iPhone 4s

• iPhone 5

• iPhone 5c

• iPhone 5s

• iPhone 6

• iPhone 6 Plus

*These devices are not compatible with 'basic' control mode.

17

MGH25BT OPERATION

Preparation

Pairing a New Device

Pairing Additional

Devices

Connecting a Paired 

Device

Disconnecting a Device

Streaming Audio

Bluetooth  Operation

Pairing a Device

Before you can use a Bluetooth device, it must be paired and
connected. Make sure that Bluetooth is activated on your
device before you begin the pairing process.

The MGH25BT broadcasts the pairing signal constantly when
no devices are currently 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 BT"

Note: The MGH25BT can be in any mode of operation when

pairing is performed.

If a device is currently connected, press and hold BAND
to disconnect the current device before a new device can
be paired. Then begin the pairing sequence from the new
Bluetooth device.

Most Bluetooth devices support the auto-connect feature,
and will connect automatically if the device is in range when
the MGH25BT is powered-on. If your device was previously
paired but does not connect, use these instructions below.

• If your most recently connected Bluetooth device becomes
disconnected or does not reconnect, press BAND from
Bluetooth mode to reconnect your mobile device.

• To connect a previously paired device that was not recently
connected:

1) If applicable, press and hold BAND to disconnect any
connected mobile devices.

2) From Bluetooth mode, press SELECT. "Paired Devices"
will appear on the LCD.

3) Press the volume up/down buttons to cycle through the
list of devices.

4) Press SELECT or BAND to connect to the desired device. It
must be in range to connect.

Note: If the Auto Connect setup menu setting is set to OFF,
you must press BAND to connect you device after pairing,
and each time the MGH25BT is powered-on.

Press and hold BAND for 3 seconds to disconnect a
connected device. The device will remain paired and appear
in the PAIRED DEVICES menu but will not be connected.

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

• Press

• Press
playback.

to skip to the next available audio track.

ll

to skip to the previous audio track.

nn

/

II

to toggle between play and pause during

l

18

MGH25BT OPERATION

Bluetooth  Operation

Streaming Audio Operation

The MGH25BT supports A2DP (advanced audio distribution profile) wireless streaming
audio from your Bluetooth mobile device directly to your head unit. You can also control
your music from the front panel of the head unit using AVRCP (audio video remote control
profile).

• To stream music to your head unit, your mobile device must support the A2DP and
AVRCP Bluetooth profiles. Check the owner's manual of your mobile device for details.

• Streaming audio must be enabled from your mobile device. This option will vary
depending on the device. Some devices allow streaming audio to be disabled.

After pairing, connecting and enabling streaming audio from a compatible mobile device,
begin playing music using the music player on your mobile device. Once the music is
playing, the following functions can be used to control the music:

• The button will skip to the next available audio track.

ll

• The button will skip to the previous audio track.

nn

l

II

Bluetooth Reset

• The / button will toggle between play and pause during playback.

Note: Some Bluetooth devices may not fully support these commands.

Resetting the Bluetooth module will remove the list of paired phones and delete the list of
recent calls from memory.

To reset Bluetooth, perform the following steps:

1) Press MODE until the head unit is in Bluetooth mode.

2) Press and hold MENU for 3 seconds to reset Bluetooth settings back to factory default.

Compatibility Note:

Due to the differences in Bluetooth technology, some mobile devices may be incompatible,
function improperly or may not support all features when used with the MGH25BT.

Bluetooth Setup Menu Options

Function Options Action

Bluetooth BL'TOOTH (ON/OFF) Enables/disables Bluetooth functionality.

Auto Connect AUTO CON (ON/OFF)

Set to On to allow a Bluetooth device to connect
automatically or Off to require manual connection.

19

MGH25BT OPERATION

Pandora Operation

Requirements

USB Connection 

Changing Stations

Shuffle

Control for Pandora requires:

• An iPhone device with a reliable data connection, or an
iPod touch that is connected to wireless internet.

• The Pandora App installed on the iPhone/iPod device.

• An active account with Pandora. Sign up at www.pandora.
com.

• The USB sync cable that came with your iPod/iPhone
device.

Connect an iPod touch or iPhone device (required, sold
separately) to the USB port, using the USB sync cable
included with your iPhone device.

1. Press SELECT to display the Stations Menu.

2. Use the VOL+ or VOL- buttons to choose to sort

channels by date or alphabetically.

3. Press SELECT to confirm, then use the VOL+ or VOL-

buttons to cycle through the list of stations.

4. Press SELECT when the desired station is highlighted,

and playback will begin.

Note: Stations must be created on your account prior to
connecting your iPod/iPhone device to the head unit.

Press SELECT to display the Stations Menu. Choose “Shuffle”
from the stations menu to shuffle songs from all of your
stations.

20

  Skipping Tracks

Play/Pause

Thumbs Up 

Thumbs Down

Press

Press l/ II to temporarily stop playback.
Press l/ II again to resume playback.

Press to tell Pandora you like the current track. Pandora
will play more tracks with similar qualities.

Press to tell Pandora you do not like the current track.
Pandora will not play the current track again, and will avoid
playing tracks with similar qualities.

Refer to www.pandora.com/everywhere/mobile for devices
compatible with the Pandora mobile application.

Note: Pandora is an internet service, carrier and data
charges may apply.

to skip the current song.

ll

MGH25BT OPERATION

Troubleshooting 

Problem Cause Action

Unit will not turn on 

(no power)

Unit has power 

(but no sound)

Unit blows fuses

PROTECT appears 

on display

NO FILE appears 

on display

NO SUPPORT appears 

on display

Yellow wire not connected or incorrect

voltage Red wire not connected or

incorrect voltage

Black wire not connected Check connection to ground

Fuse blown Replace fuse

Speaker wires not connected Check connections at speakers

One or more speaker wires touching

each other or touching chassis ground

Yellow or red wire touching chassis

ground

Speaker wires touching chassis ground Check for pinched wire

Incorrect fuse rating Use fuse with correct rating

The WMA file is copy-protected by DRM

(Digital Rights Management)

Selected file is not available in direct or

alphanumeric search modes

An invalid ID3 tag version is present

An ID3 tag character is not supported

Check connections for proper

Insulate all bare speaker wires

from each other and chassis

Check for pinched wire

Write files using WMA files that

Repeat search using valid

Version 1.0 to 2.4 ID3 tags are

Only ASCII characters are

voltage (11~16VDC)

ground

are not copy-protected

parameters

supported.

supported.

21

MGH25BT 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

2. If you require service during the

3. Please describe your problem in

4. For more information and for the

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.

troubleshooting guide in your owner’s
manual. A slight adjustment of any
custom controls may save you a service
call.

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.

writing and include your name, a
return UPS shipping address (P.O. Box
not acceptable), and a daytime phone
number with your shipment.

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]

22

MGH25BT OPERATION

Specifications

FM Tuner

AM Tuner

General

Bluetooth   Profiles

®

Tuning range: 87.5MHz-107.9MHz
Usable sensitivity: 8.5dBf
50dB quieting sensitivity: 10dBf
Stereo separation @ 1kHz: 40dB
Frequency response: 30Hz-13kHz

Tuning range: 530kHz-1710kHz
Usable sensitivity: 22uV
Frequency response: 30Hz-2.2kHz

Speaker output impedance: 4~8 ohms
Line output voltage: 2 Volts RMS

A2DP (advanced audio distribution profile)
AVRCP (audio video remote control profile)

Design and specifications subject to change without notice.

CEA-2006 Power Standard Specifications

(reference: 14.4VDC +/- 0.2V, 20Hz~20kHz)

Power Output: 18 Watts RMS x 4 channels at 4 ohms and < 1% THD+N
Signal to Noise Ratio: 80dBA (reference: 1 watt into 4 ohms)

23

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.

Dual Electronics Corp.

Toll Free: 1-866-382-5476

9AM-5PM EST, Monday-Friday

©2016 Dual Electronics Corp. All rights reserved.

iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries.

“Made for iPod” and “Made for iPhone” mean that an electronic accessory has been designed to connect specifically to iPod or iPhone,

respectively, and has been certified by the developer to meet Apple performance standards. Apple is not responsible for the operation

of this device or its compliance with safety and regulatory standards. Please note that the use of this accessory with iPod or iPhone

Pandora, the Pandora logo, and the Pandora trade dress are trademarks of Pandora Media, Inc., used with permission.

Other trademarks and trade names are those of their respective owners.

www.dualav.com

may affect wireless performance.

NSA1016-V02