DUAL DC525Bi AM FM CD Receiver Owner’s Manual

: June 13, 2024
: Dual

DUAL DC525Bi AM FM CD Receiver

DUAL-DC525Bi-AM FM CD Receiver-PRODUCT

Product Information

Product Name: DC525Bi Product Type: AM/FM/CD Receiver Manufacturer: Unknown Website: https://manual-hub.com/

Product Usage Instructions

Installation

Preparation

Follow the typical front-load mounting method.

Visit the website https://manual-hub.com/ for detailed installation instructions.

Wiring Diagram:

Connect the antenna connector. – Replace the 10 AMP AGC fuse with a new one of the correct type and amperage. The fuse is located beside the wiring connector.

Operation

Control Locations

Receiver:
The receiver has various controls and buttons numbered from 1 to 18.
Refer to the user manual for detailed information on each control’s function.

General Operation:

Power On/Off:
Press any button (except EJECT) to turn the unit on. Press the power button to turn the unit off.
Auxiliary Input: Use the 3.5 mm port on the front panel to connect an audio device or MP3 player. Press MODE to select AUX mode.

Volume Adjustment:

Use the volume knob to adjust the volume from 00 to 30.

Display

Press DISP to switch between different types of information, such as clock, radio frequency, CD track/elapsed time, or MP3/WMA song information.
Reset: Press RESET if abnormal operation occurs. The reset button is located behind the front panel.
Set the Clock: – With the unit on, press and hold DISP until the clock begins to flash, then release.
Use TUNE to adjust the hours and minutes.
Press DISP momentarily to save the selected time. – 12/24-hour

Clock
The clock displays 12-hour AM/PM time in USA frequency spacing mode (e.g., PM 10:00). – In European frequency spacing mode, the clock displays 24-hour time (e.g., 22:00).

Setup Menu:

Press and hold AUDIO/MENU for more than 3 seconds to access the setup menu.
Press AUDIO/MENU momentarily to select between menu functions.
Rotate the volume knob left/right to adjust or activate the desired function.

General Operation

Setup Menu

The setup menu provides various options and actions.
Refer to the user manual for detailed information on each menu function and its available options.
Note: For additional instructions and information, please refer to the complete user manual available on the website https://manual-hub.com

AM/FM/CD Receiver

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.
Remove 2 transit screws located on top of the 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

Wiring Diagram

DUAL-DC525Bi-AM FM CD Receiver-FIG-3

Control Locations - Receiver

Preset 1 / Repeat
Preset 2 / Random
Preset 3 / Intro
Power / Mute
Tune / Track Down
Tune / Track Up
Mode
Band / Go Back
Volume Knob
Bluetooth Talk
Auxiliary Input
Audio / Menu
USB Input
Display
Preset 6 / Folder up
Preset 7 / Folder down
Preset 4 / Play / Pause
Eject
Mode
Volume Up
Power
Select
Tune / Track Up
Volume Down
Band / Go Back
Preset 3 / Intro
Preset 2 / Random
Preset 6 / Folder Up / Thumbs Up
Mute
Audio / Menu
Preset 5 / Folder Down / Thumbs Down
Preset 4 / Play / Pause
Preset 1 / Repeat
Bluetooth Talk
Tune / Track Down

General Operation

Power On/Off
Press or any other button (except EJECT) to turn the unit on. Press to turn the unit off.
Mode
Press MODE to select between AM/FM, CD player, auxiliary front/rear, USB, operation of iPod®/iPhone® and Bluetooth. Modes of operation are shown in the display.
NOTE: CD, USB and operation of iPod modes will not appear unless a CD is inserted or USB/iPod devices are connected.
Auxiliary Input
The DC525Bi offers a 3.5 mm port on the front panel to connect audio device, MP3 player, etc. Press MODE to select AUX mode.
Volume
Adjust volume using volume knob (00-30).
Display
Press DISP to select between clock and different types of information, such as radio frequency, CD track/elapsed time or MP3/WMA song information.
Reset
Press RESET upon initial installation or if abnormal operation occurs. Reset button is located behind the front panel.
Set the Clock
With the unit on, press and hold DISP until the clock begins and TUNE to flash, then release. Press TUNE to adjust the minutes. Press TUNE DISP to adjust the hours momen-ll tarily to save the selected time.
12/24-hour Clock
The clock will display 12-hour AM/PM time in USA frequency spacing mode (PM 10:00). In European frequency spacing mode, the clock will display 24-hour time (22:00).
Setup Menu
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 rotate the volume knob left/right to adjust or activate the desired function.

Setup Menu

Menu Function Options Action

Auto Station Store| AUTO STORE| Press SELECT to seek and save 6 strong stations in the current band. ( Tuner mode only)

Local/Distance Tuning

| LOCAL OFF| Activates distance tuning ( Tuner mode only ).
LOCAL ON| Activates local tuning for strong station reception only (Tuner mode only).

Tuner Frequency Spacing

| FREQ USA| Programs the unit to USA tuner spacing.

(200kHz for FM and 10kHz for AM). (Tuner mode only)

FREQ EURO| Programs the unit to European tuner spacing. (50kHz for FM and 9kHz for AM). (Tuner mode only)
Auxiliary Input| AUX ON| Enables the front panel 3.5mm auxiliary input.
AUX OFF| Disables the front panel 3.5mm auxiliary input.
Beep Confirmation| BEEP OFF| Disables the confirmation beep.
BEEP ON| Enables the confirmation beep.

LED Color

| LED AUTO| Programs unit to automatically rotate through all LED colors.
BLUE| Programs unit to use blue LED display.
GREEN| Programs unit to use green LED display.
RED| Programs unit to use red LED display.
YELLOW| Programs unit to use yellow LED display.
PURPLE| Programs unit to use purple LED display.
CYAN| Programs unit to use cyan LED display.
WHITE| Programs unit to use white LED display.
LED ADJ| Press and rotate the volume knob to adjust each RGB color level. After adjustment, that color will appear on the LCD.
Programmable Turn On Volume| PRO-VOL #| Programs unit to always turn on at a specific volume (default is OFF). Any volume level 1-30 can be selected.
Power on Message| MSG OFF| Disables power on message. (example: GOOD MORNING)
MSG ON| Enables power on message to be displayed.

Scrolling Option

| SCROLL 15 S| Programs unit to scroll information every 15 seconds (default).
SCROLL ONCE| Programs unit to scroll once, then show the first 10 characters on display.
SCROLL ON| Programs unit to scroll continuously.
SCROLL OFF| Programs unit to show the first 10 characters on the display.
Demonstration Mode| DEMO OFF| Disables the demonstration mode.
DEMO ON| Enables the demonstration message.

Bluetooth

| BT ON| Enables Bluetooth functionality.
BT OFF| Disables Bluetooth functionality.

Auto Answer

| ANSWER ON| Programs unit to automatically answer every incoming phone call after 2-3 rings.
ANSWER OFF| Programs unit to require the button must be pressed to answer incoming phone calls.

General Operation

Audio
Press AUDIO/MENU momentarily to select between Bass, Treble, Balance, Fader, Subwoofer and Source Volume Level.
Bass
Press AUDIO/MENU until BASS appears then rotate volume knob left/right to adjust ( -6 minimum / +6 maximum).
Treble
Press AUDIO/MENU until TREBLE appears then rotate volume knob left/right to adjust ( -6 minimum / +6 maximum).
Balance
Press AUDIO/MENU until BAL appears then rotate volume knob left/right to adjust (BAL LEFT 12 – BAL RIGHT 12). BAL EVEN represents equal balance
Fader
Press AUDIO/MENU until FADER appears then rotate volume knob left/right to adjust (FADER FRONT 12 – FADER REAR 12). FADER EVEN represents equal fader
EQ
Press EQ, then turn the volume knob to cycle through the following equalization curves: FLAT (default), POP, JAZZ, CLASSIC, BEAT, ROCK and USER. Any manual adjustment to the Bass or Treble settings are automatically saved as USER.
Loudness
Press AUDIO/MENU until LOUD appears then rotate volume knob left/right to adjust LOUD ON/OFF.
Source Volume Level
The source volume level control allows a gain adjustment for each audio source: AM, FM, CD, AUX, operation of iPod, Pandora and USB. Set the source volume level for each mode, depending on the relative volume of each audio source.
To set the source volume level, press AUDIO/MENU until SRC LEVEL appears. After one second, the current mode will appear on the display. Turn the volume knob to adjust the audio level of the current source (-3 minimum/+3 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.

AM/FM Tuner Operation

Seek Tuning
Press for more than one second to seek to the next strong station.
Manual Tuning
Press momentarily to change radio frequency up or down one step at a time. Press and hold to advance quickly.
Band
Press BAND to select between FM1, FM2, FM3, AM1 and AM2 bands.
Storing and Recalling Station Presets
Up to 18 FM stations 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
2 seconds. When stored, the preset number will appear in the display. The station can be recalled anytime by pressing the corresponding preset button.

CD Player Operation

Insert CD
With the label facing up, insert a standard size CD into the CD slot. The CD will automatically begin playback.
Eject CD
Press EJECT to eject the CD. The unit will change to previous mode of operation. If the disc is not removed within 10 seconds, the unit will reload the disc. The unit does not have to be turned on to eject CD.
Track Select
Press to skip to the beginning of the next track. Press to return to the beginning of the current track. Pressing again skips to the beginning of the previous track.
Fast Forward and Reverse
Press and hold TRACK ll or TRACK nn to fast forward or reverse a track.
Pause
- Press to temporarily stop CD playback.
- Press again to resume playback.
Intro
Press INT to enter the Intro menu, then turn the volume knob to select one of the following options:
- OFF – Cancels the INT function.
- ALL – Plays the first 10 seconds of each track.
Repeat
Press RPT to enter the Repeat menu, then turn the volume knob to select one of the following options:
- ALL – Plays all tracks on CD.
- TRACK – Continuously repeats selected track.
Random
Press RDM to enter the Random menu, then turn the volume knob to select one of the following options:
- OFF – Cancels the RDM function.
- ALL- Plays all tracks in random order.
CD-R/CD-RW Compatibility
Some CD-Rs and CD-RWs may be incompatible with this unit, depending on media type and recording method. In addition, the following CDs may be incompatible with this unit:
CDs exposed to extreme temperatures or direct sunlight for extended periods of time, CDs recorded in which a recording session failed or a re-recording was attempted and, or encrypted or copy-protected CDs which do not conform to the audio CD-DA red book recording standard.

CD Player Operation – MP3/WMA Files

When an MP3/WMA encoded disc is first inserted, “DISC READ” will appear in the display. Depending on the number of files and folders, this may take several seconds.
Press DISP to select between song title, artist, file name, folder name, track number, and clock/elapsed time.
“NO ARTIST” or “NO TITLE” will be displayed if the MP3/WMA file contains no ID3 tag information.
“ROOT” will be displayed if the directory name of a root folder is not labeled.
Title Icon
This icon will illuminate when the song title is displayed.
Artist Icon
This icon will illuminate when the artist name is displayed.
Folder Icon
This icon will illuminate when the folder name is displayed.
File Icon
This icon will illuminate when the file name is displayed.
Character Support
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.
  When referring to MP3/WMA playback, the following terms are synonymous:
File name and track name
Folder name and directory name

CD Player Operation - MP3/WMA Files

Folder/File Search Mode
MP3/WMA CD mode features a file and folder search mode. This search allows navigating through folders to find a specific MP3 or WMA file for playback.
Step 1
Press SELECT to enter the file/folder search mode. A list of all the folders on the CD 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.
Step 2
Turn the volume knob 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. Turn the volume knob to cycle through the list of files.
Note: Pressing GO BACK when viewing the contents of a folder will return to the list of folders on the CD. Press GO BACK again to exit the search menu.
Step 3
Once the desired song is displayed, press SELECT to begin playback of the desired song.
Folder Access
- Press to select the previous folder.
- Press to select the next folder.
  *Folder access is only available on MP3/WMA discs recorded with more than one folder.
Repeat
Press RPT to enter the Repeat menu, then turn the volume knob to select one of the following options:
- ALL – Plays all tracks on CD.
- TRACK – Continuously repeats selected track.
- FOLDER – Continuously repeats all files in selected folder.
Random
Press RDM to enter the Random menu, then turn the
Media Compatibility
The following types of discs/files are compatible:
- CD-ROM (ISO), CD-R, CD-RW
- CD-DA
- MP3 data
- WMA data
  The following types of discs/files are not compatible:
- WMA files that are protected by DRM (Digital Rights Management).
- WMA lossless format
- Discs recorded with Track At Once or packet writing
- MP3 PRO format
- MP3 playlists
- WAV format
Playback Order
MP3/WMA playback sequence is based on recorded order of files and begins in the root folder of the disc. Any empty folders or folders that do not include MP3/WMA files are skipped. This unit may not play files in the order they were recorded in. Refer to your recording software’s user’s manual for more information.
Compatible Recording Formats
- ISO9660 level 1
- ISO9660 level 2
- Yellow Book MODE 1
- Yellow Book MODE 2 FORM 1
- Multi session
- Maximum files – 999
- Maximum folders – 255
- Maximum folder levels – 8
- MPEG-1/2/2.5 Audio Layer-3
  ISO9660 standards:
- Maximum nested folder depth is 8 (including the root folder).
- Valid characters for folder/file names are letters A-Z (all caps), numbers 0-9, and “_” (underscore). Some characters may not be displayed correctly, depending on the character type.
- This device can play back discs in Joliet, Romeo, and other standards that conform to ISO9660. MP3/WMA written in the formats other than the above may not play and/or their file names or folder names may not be displayed properly.
Additional MP3/WMA Information
- An internal buffer provides ESP (Electronic Skip Protection) to virtually eliminate skipping.
- When playing a disc recorded with regular audio files (CD-DA or .WAV) and MP3/WMA files, the unit will play the MP3/WMA files only.
- 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 discs which contain non-MP3/WMA files with the MP3/WMA extension.
Sampling Frequency Rates
- MP3
  8kHz ~ 48kHz
- WMA
  32kHz–48kHz
Transfer Bit rates
- MP3
  32kbps ~ 320kbps constant Variable bit rates
- WMA
  32kbps ~ 192kbps constant Variable bit rates
  Note: Some files may not play or be displayed correctly, depending on sampling rates and bit rates.
MP3 Tag Display
ID3 tags Version 1.0 to 2.4.
This model will not display ID3 Version 2.4 or greater tags.
Recommended Settings
- For best results, use the following settings when burning an MP3 disc:
  128kbps or higher constant bit rate
  44.1kHz or higher sampling frequency
- For best results, use the following settings when burning a
  WMA disc:
  64kbps or higher constant bit rate
  32kHz or higher sampling frequency

USB Operation

To play MP3/WMA files from most USB mass storage devices, line up the USB connector and insert the USB device into the DC525Bi’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.
Track Select
Press to skip to the beginning of the next track. Press to return to the beginning of the current track. Pressing again skips to the beginning of the previous track.
Fast Forward and Reverse
Press and hold to fast forward or reverse a track.
Pause
- Press to temporarily stop USB playback.
- Press again to resume playback.
File Search
Step 1
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.
Step 2
Turn the volume knob 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. Turn the volume knob to cycle through the list of files.
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.
Step 3
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.
Displaying Information
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.
Song Title Icon
This icon will illuminate when the song title is displayed.
Artist Icon
This icon will illuminate when the artist name is displayed.
Folder Icon
This icon will illuminate when the folder name is displayed.
File Icon
This icon will illuminate when the file name is displayed.
Folder Access
- 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.
Repeat
Press RPT to enter the Repeat menu, then turn the volume
knob 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.
Random
Press RDM to enter the Random menu, then turn the volume knob 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.
  Note: Random mode is retained in memory when selecting between other modes and when the unit is turned on/off.
Intro
Press INT to enter the Intro menu, then turn the volume knob 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.
Character Support
- 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.
Media Compatibility
- 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
Playback Order
- 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.
Playback Capacity
- Maximum number of files: 999
- Maximum number of folders: 255 plus the root directory
- Maximum number of files in each folder and root: 999
  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.
USB Device Compatibility
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.
Additional MP3/WMA Information
- 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.
Sampling Frequency Rates
- MP3
  8kHz ~ 48kHz
- WMA
  32kHz ~ 48kHz
Transfer Bit rates
- MP3
  32kbps ~ 320kbps constant Variable bit rates
- WMA
  32kbps ~ 192kbps constant Variable bit rates
- Note: Some files may not play or be displayed correctly, depending on sampling rates and bit rates.
MP3 Tag Display
ID3 tags Version 1.0 to 2.4
Note: If an invalid ID3 tag version is detected, “NO SUPPORT” will scroll on the display.

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 DC525Bi’s USB port. Once connected, playback will begin automatically.

Controlling a Device

Use the following functions to control the device:

Song Select
Press to skip to the beginning of the next song. Press to return to the beginning of the current song. Pressing again skips to the beginning of the previous song.
Fast Forward and Reverse
Press and hold to fast forward or reverse a song.
Pause
Press to temporarily stop playback.
Press again to resume playback.
Repeat
Press RPT to enter the Repeat menu, then turn the volume knob to select one of the following options:
- ALL – Repeats all tracks.
- SONG – Repeats selected track.
Random
Press RDM to enter the Random menu, then turn the volume knob 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.
Intro
Press INT to enter the Intro menu, then turn the volume knob to select one of the following options:
- OFF – Cancels the INT function.
- ON – Plays first 10 seconds of each track.

Music Search Menu

The DC525Bi features a powerful music search that simplifies the searching process. Follow the steps below to find the desired song:

Begin Searching
Press SELECT to begin the search. The main search menu will appear.
Select a Category
Turn the volume knob 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.

DUAL-DC525Bi-AM FM CD Receiver-FIG-28

Finding a Song
Once the search category (and subcategories) are selected, use the volume knob to navigate to the desired song/podcast/audiobook
Playing a Song
Press SELECT with the desired song name highlighted to begin playback.
Step Backwards
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.

Displayed Information

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

DUAL-DC525Bi-AM FM CD Receiver-FIG-29

Character Support
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.

Device Compatibility

Made for

iPod touch (6th generation)
iPod nano (6th generation)
iPod touch (5th generation)
iPod nano (5th generation)
iPod touch (4th generation)
iPod nano (4th generation)
iPod touch (3rd generation)
iPod nano (3rd generation)
iPod touch (2nd generation)
iPod nano (2nd generation)
iPod classic
iPod touch (1st generation)
iPod nano (1st generation)
iPod with video
iPhone 5S
iPhone 5
iPhone 4S
iPhone 4
iPhone 3GS
iPhone 3G
iPhone
*These devices are not compatible with ‘basic’ control mode.

Bluetooth® Operation

Pairing a Device

Preparation
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.
Pairing a New Device
The DC525Bi 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”
The Bluetooth passcode ”1234″
Note: The DC525Bi can be in any mode of operation when pairing is performed.
Pairing Additional Devices
If a device is currently connected, press and hold to disconnect the current device before a new device can be paired. Then begin the pairing sequence from the new Bluetooth device.

(Re)Connecting a Paired Device

Most Bluetooth devices support the auto-connect feature, and will connect automatically if the device is in range when the DC525Bi is powered-on. If your device was previously paired but does not connect, use these instructions below. Some devices require authorization to allow the auto connect feature.

If your most recently connected Bluetooth device becomes disconnected or does not reconnect, press from Bluetooth mode to reconnect your mobile device.
To connect a previously paired device that was not recently connected:
- If applicable, press and hold to disconnect any connected mobile devices.
- From Bluetooth mode, press SELECT. “Paired Devices” will appear on the LCD.
- Turn the volume knob to cycle through the list of devices.
- Press SELECT or 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 to connect you device after pairing, and each time the DC525Bi is powered-on.

Disconnecting a Device

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

Making a Phone Call

Manual Dialing
- Press once. “Enter Phone Number” will be shown, then an “_” will appear on the display.
- Using the remote control, enter the phone number using the 0-9 buttons. Press on the remote control or DC525Bi front panel to begin dialing.
  Note: Placing a phone call from your cell phone will also use the Bluetooth function of the DC525Bi.
Recent Calls List
- Press SELECT from Bluetooth mode to view the 10 most recent phone calls that were dialed, received or missed while connected to the DC525Bi.
- Turn the volume knob to cycle through the recent phone numbers. Press SELECT or to dial the phone number.
Redialing the last number
To redial the last phone number, press two times from Bluetooth mode. Press again to redial the phone number.

Receiving and Ending Phone Calls

Receiving a Phone Call
Incoming phone calls will automatically appear on the display and a ring tone will be heard.
Note: The volume of the ring tone depends on the volume level of the DC525Bi. The incoming ring tone may not be heard if the volume is set to a low level or mute is activated
- Press to receive the incoming phone call.
- Press to refuse the incoming phone call.
  Note: If Auto Answer is set to ON in the setup menu, all phone calls will be received automatically.
Ending a Phone Call
During an active phone call, press to end a phone call. If the phone call was received when listening to music in another mode, the DC525Bi will resume the previous mode.

During a Phone Call

Volume
Turn the volume knob to adjust the volume level during a phone call. Bluetooth mode has a separate volume level from the main volume of other modes. The DC525Bi will remember the volume level in Bluetooth mode and always return to the last volume level for each phone call.
Microphone Mute
Press MUTE during a phone call to turn the DC525Bi’s external microphone off. Press MUTE again to resume microphone operation.
Audio Transfer
Press DISP during a phone call to transfer the call from the DC525Bi to the cell phone. Press DISP again to toggle the audio back to the DC525Bi.
Call Waiting
During a phone call, if there is a second incoming call, press to place the first call on hold and switch to the second phone call. Press again to switch back to the first call.
Call Hold
During a phone call, when there are no additional incoming calls, press to place the call on hold. Press again to resume the phone call.
Note: Audio transfer, call waiting and call hold must be supported by the mobile phone and service provider to function properly.

Bluetooth Setup Menu Options

Function Options Action

Bluetooth| BT (ON/OFF)| Enables/disables Bluetooth functionality.

Auto Answer

| ****

ANSWER (MENU/AUTO)

| When set to ON, every incoming phone call will automatically be answered after 2-3 rings. When set to OFF, the button must be pressed to answer incoming phone calls.

Streaming Audio Operation

The DC525Bi 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).

Notes:

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.
The button will skip to the previous audio track.
The button will toggle between play and pause during playback.
The button will stop the audio playback.

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

Pandora Operation

Requirements
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.
USB Connection
Connect an iPod touch or iPhone device (required, sold separately) to the USB port, using the USB sync cable included with your iPhone device.
Changing Stations
- Press SELECT to display the Stations Menu.
- Rotate the volume knob to choose to sort channels by date or alphabetically.
- Press SELECT to confirm, then turn the volume knob to cycle through the list of stations.
- 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.
Shuffle
Press SELECT to display the Stations Menu. Choose “Shuffle” from the stations menu to shuffle songs from all of your stations.
Skipping Tracks
Press to skip the current song.
Play/Pause
- Press to temporarily stop playback.
- Press again to resume playback.
Thumbs Up
Press to tell Pandora you like the current track. Pandora will play more tracks with similar qualities.
Thumbs Down
- 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.

Specifications

CD Player
- Frequency response: 10Hz-20kHz
- Channel separation @ 1kHz: >65dB
- D/A converter: 1 Bit
FM Tuner
- Tuning range: 87.5MHz-107.9MHz
- Usable sensitivity: 8.5dBf
- 50dB quieting sensitivity: 10dBf
- Stereo separation @ 1kHz: 40dB
- Frequency response: 30Hz-13kHz
AM Tuner
- Tuning range: 530kHz-1710kHz
- Usable sensitivity: 22uV
- Frequency response: 30Hz-2.2kHz
General
- Speaker output impedance: 4~8 ohms
- Line output voltage: 2 Volts RMS
- Dimensions: 4″ x 7″ x 7″ (51 x 178 x 178 mm)
  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)

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?
- 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.
- 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.
- 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.
- 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.

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

Excessive skipping

| Unit is not mounted correctly or backstrap is not secure| Check mounting sleeve and backstrap support
Physical defect in media (CD, CD-R or CD-RW)| Check media for scratches
ERROR 2 appears on display| Disc read error or disc is in upside down| Press eject or RESET
PROTECT appears on display| The WMA file is copy-protected by DRM (Digital Rights Management)| Write disc using WMA files that are not copy- protected
NO FILE appears on display| Selected file is not available in direct or alphanumeric search modes| Repeat search using valid parameters

Unit will not accept a disc

| CD mechanism position out of alignment| Press and hold EJECT for 3 seconds to reset CD mechanism position
CD transit screws still in place| Remove 2 transit screws located on top of the unit

NO SUPPORT appears on display

| An invalid ID3 tag version is present| Version 1.0 to 2.4 ID3 tags are supported.
An ID3 tag character is not supported| Only ASCII characters are supported.

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
www.dualav.com

©2015 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 may affect wireless performance.
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