Sony MEX-BT2750 User manual

©2009 Sony Corporation
Operating Instructions
To cancel the demonstration (DEMO) display, see page 7.
GB
4-125-798-71 (1)
MEX-BT2750
Bluetooth®
Audio System

2
Note on the lithium battery
Do not expose the battery to excessive heat such as
direct sunlight, fire or the like.
The Bluetooth word mark and logos are owned
by the Bluetooth SIG, Inc. and any use of such
marks by Sony Corporation is under license.
Other trademarks and trade names are those of
their respective owners.
Be sure to install this unit in the dashboard of
the car for safety. For installation and
connections, see the supplied installation/
connections manual.
This label is located on the bottom of the
chassis.
Windows Media, and the
Windows logo are trademarks
or registered trademarks of
Microsoft Corporation in the
United States and/or other countries.
MPEG Layer-3 audio coding technology and
patents licensed from Fraunhofer IIS and Thomson.
This product is protected by certain intellectual
property rights of Microsoft Corporation. Use or
distribution of such technology outside of this
product is prohibited without a license from
Microsoft or an authorized Microsoft subsidiary.
Warning if your car’s ignition has no
ACC position
Be sure to set the Auto Off function (page 18).
The unit will shut off completely and
automatically in the set time after the unit is
turned off, which prevents battery drain.
If you do not set the Auto Off function, press
and hold (OFF) until the display disappears
each time you turn the ignition off.

3

4
Table of Contents
Getting Started
Playable discs on this unit . . . . . . . . . . . . . . . . . 6
Notes on Bluetooth . . . . . . . . . . . . . . . . . . . . . . 6
Resetting the unit. . . . . . . . . . . . . . . . . . . . . . . . 7
Canceling the DEMO mode . . . . . . . . . . . . . . . 7
Preparing the card remote commander . . . . . . . 8
Setting the clock . . . . . . . . . . . . . . . . . . . . . . . . 8
Detaching the front panel . . . . . . . . . . . . . . . . . 8
Attaching the front panel . . . . . . . . . . . . . . . 9
Location of controls and basic
operations
Main unit. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Card remote commander RM-X304 . . . . . . 12
Radio
Storing and receiving stations . . . . . . . . . . . . . 13
Storing automatically — BTM . . . . . . . . . . 13
Storing manually. . . . . . . . . . . . . . . . . . . . . 13
Receiving the stored stations . . . . . . . . . . . 13
Tuning automatically . . . . . . . . . . . . . . . . . 13
CD
Display items . . . . . . . . . . . . . . . . . . . . . . . 13
Repeat and shuffle play. . . . . . . . . . . . . . . . 13
Bluetooth (Handsfree calling and
Music streaming)
Bluetooth operations . . . . . . . . . . . . . . . . . . . . 14
Pairing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
About Bluetooth icons . . . . . . . . . . . . . . . . 15
Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
To switch the Bluetooth signal output of this
unit to on . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Connecting a cellular phone. . . . . . . . . . . . 15
Connecting an audio device . . . . . . . . . . . . 15
Handsfree calling . . . . . . . . . . . . . . . . . . . . . . 15
Receiving calls . . . . . . . . . . . . . . . . . . . . . . 15
Making calls . . . . . . . . . . . . . . . . . . . . . . . . 16
Call transfer . . . . . . . . . . . . . . . . . . . . . . . . 16
Voice Dial Activation . . . . . . . . . . . . . . . . 16
Music streaming . . . . . . . . . . . . . . . . . . . . . . . 16
Listening to music from an audio
device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Operating an audio device with this
unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Deleting registration of all paired devices . . . 17
Other functions
Changing the sound settings . . . . . . . . . . . . . . 17
Adjusting the sound characteristics . . . . . . 17
Customizing the equalizer curve
— EQ3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Adjusting setup items — SET . . . . . . . . . . . . 18
Using optional equipment. . . . . . . . . . . . . . . . 19
Auxiliary audio equipment. . . . . . . . . . . . . 19
CD changer. . . . . . . . . . . . . . . . . . . . . . . . . 19
Rotary commander RM-X4S . . . . . . . . . . . 20
Additional Information
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Notes on discs . . . . . . . . . . . . . . . . . . . . . . 21
Playback order of MP3/WMA files . . . . . . 21
About MP3 files . . . . . . . . . . . . . . . . . . . . . 21
About WMA files. . . . . . . . . . . . . . . . . . . . 21
About Bluetooth function. . . . . . . . . . . . . . 22
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Removing the unit. . . . . . . . . . . . . . . . . . . . . . 24
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 24
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 25
Error displays/Messages. . . . . . . . . . . . . . . 27

5
Support site
If you have any questions or for the latest support information on this
product, please visit the web site below:
Customers in Latin America:
http://esupport.sony.com/ES/LA/
Customers in Pan Asia:
http://www.sony-asia.com/section/support
http://www.sony-asia.com/caraudio/
Provides information on:
• Models and manufacturers of compatible cellular phones and the FAQ
about Bluetooth function

6
Getting Started
Playable discs on this unit
This unit can play CD-DA (also containing CD
TEXT) and CD-R/CD-RW (MP3/WMA files
(page 21)).
Notes on Bluetooth
Caution
IN NO EVENT SHALL SONY BE LIABLE FOR
ANY INCIDENTAL, INDIRECT OR
CONSEQUENTIAL DAMAGES OR OTHER
DAMAGES INCLUDING, WITHOUT
LIMITATION, LOSS OF PROFITS, LOSS OF
REVENUE, LOSS OF DATA, LOSS OF USE OF
THE PRODUCT OR ANY ASSOCIATED
EQUIPMENT, DOWNTIME, AND
PURCHASER’S TIME RELATED TO OR
ARISING OUT OF THE USE OF THIS
PRODUCT, ITS HARDWARE AND/OR ITS
SOFTWARE.
IMPORTANT NOTICE!
Safe and efficient use
Changes or modifications to this unit not expressly
approved by Sony may void the user’s authority to
operate the equipment.
Please check for exceptions, due to national
requirement or limitations, in usage of Bluetooth
equipment before using this product.
Driving
Check the laws and regulations on the use of cellular
phones and handsfree equipment in the areas where
you drive.
Always give full attention to driving and pull off the
road and park before making or answering a call if
driving conditions so require.
Connecting to other devices
When connecting to any other device, please read its
user guide for detailed safety instructions.
Type of discs Label on the disc
CD-DA
MP3
WMA

7
Radio frequency exposure
RF signals may affect improperly installed or
inadequately shielded electronic systems in cars,
such as electronic fuel injection systems, electronic
antiskid (antilock) braking systems, electronic speed
control systems or air bag systems. For installation
or service of this device, please consult with the
manufacturer or its representative of your car. Faulty
installation or service may be dangerous and may
invalidate any warranty that may apply to this
device.
Consult with the manufacturer of your car to ensure
that the use of your cellular phone in the car will not
affect its electronic system.
Check regularly that all wireless device equipment
in your car is mounted and operating properly.
Emergency calls
This Bluetooth car handsfree and the electronic
device connected to the handsfree operate using
radio signals, cellular, and landline networks as well
as user-programmed function, which cannot
guarantee connection under all conditions.
Therefore do not rely solely upon any electronic
device for essential communications (such as
medical emergencies).
Remember, in order to make or receive calls, the
handsfree and the electronic device connected to the
handsfree must be switched on in a service area with
adequate cellular signal strength.
Emergency calls may not be possible on all cellular
phone networks or when certain network services
and/or phone features are in use.
Check with your local service provider.
Resetting the unit
Before operating the unit for the first time, or
after replacing the car battery or changing the
connections, you must reset the unit.
Detach the front panel (page 8) and press the
RESET button (page 10) with a pointed object,
such as a ball-point pen.
Note
Pressing the RESET button will erase the clock setting
and some stored contents.
Canceling the DEMO mode
You can cancel the demonstration display which
appears during turning off.
1Press and hold the select button.
The setup display appears.
2Press the select button repeatedly
until “DEMO” appears.
3Rotate the control dial to select
“DEMO-OFF.”
4Press and hold the select button.
The setup is complete and the display returns
to normal play/reception mode.

8
Preparing the card remote
commander
Remove the insulation film.
Tip
For how to replace the battery, page 23.
Setting the clock
The clock uses a 12-hour digital indication.
1Press and hold the select button.
The setup display appears.
2Press the select button repeatedly
until “CLOCK-ADJ” appears.
3Press (SEEK) +.
The hour indication flashes.
4Rotate the control dial to set the hour
and minute.
To move the digital indication, press (SEEK)
+/–.
5After setting the minute, press the
select button.
The setup is complete and the clock starts.
To display the clock, press (DSPL). Press
(DSPL) again to return to the previous display.
Detaching the front panel
You can detach the front panel of this unit to
prevent theft.
Caution alarm
If you turn the ignition switch to the OFF
position without detaching the front panel, the
caution alarm will sound for a few seconds.
The alarm will only sound if the built-in
amplifier is used.
1Press (OFF).
The unit is turned off.
2Press , then pull it off towards you.
Notes
•Do not drop or put excessive pressure on the front
panel and display window.
•Do not subject the front panel to heat/high
temperature or moisture. Avoid leaving it in a parked
car or on a dashboard/rear tray.

9
Attaching the front panel
Engage part Aof the front panel with part Bof
the unit, as illustrated, and push the left side into
position until it clicks.
Note
Do not put anything on the inner surface of the front
panel.
B
A

10
Location of controls and basic operations
Main unit
Front panel removed This section contains instructions on the location
of controls and basic operations. For details, see
the respective pages.
The corresponding buttons on the card remote
commander control the same functions as those
on the unit.
AOFF button
To power off; stop the source.
BSEEK +/– buttons
CD:
To skip tracks (press); skip tracks
continuously (press, then press again within
about 1 second and hold); reverse/fast-
forward a track (press and hold).
Radio:
To tune in stations automatically (press); find
a station manually (press and hold).
Bluetooth audio device*1:
To skip tracks (press).
CSOURCE button
To power on; change the source (Radio/CD/
AUX/Bluetooth audio/Bluetooth phone)*2.
DBT (BLUETOOTH) button page 14
For Bluetooth signal on/off, pairing.
EControl dial/select/ (handsfree)
button
To adjust volume (rotate); select setup items
(press and rotate); receive/end a call (press).
ALBM PTY STTRACK SHUFLOUD
SET UP
DISC REGTPTAAF
AUX
1 2 3 4 5 6BTM
SOURCE
MODE
SEEK
SEEK BLUETOOTH
BT
DSPL
PUSH SELECT /
PAUSEREPALBUM
SCRL
MICSHUF
OFF
1
q
s
q
a
q
;
2
q
d
q
g
q
f
4 65 9783
RESET
qh qj

11
FDisc slot
Insert the disc (label side up), playback
starts.
GDisplay window
HAUX input jack page 19
To connect a portable audio device.
IZ (eject) button
To eject the disc.
JDSPL (display)/SCRL (scroll) button
page 13
To change display items (press); scroll the
display item (press and hold).
K(front panel release) button page 8
LMODE button page 13
To select the radio band (FM/MW/SW)*2.
MBTM button page 13
To start the BTM function (press and hold).
NNumber buttons
CD:
(1)/(2): ALBUM –/+ (during MP3/WMA
playback)
To skip albums (press); skip albums
continuously (press and hold).
(3): REP page 13
(4): SHUF page 13
(6): PAUSE
To pause playback. To cancel, press
again.
Radio:
To receive stored stations (press); store
stations (press and hold).
Bluetooth audio device*1:
(6): PAUSE
To pause playback. To cancel, press
again.
Bluetooth phone:
(5): MIC page 16
OReceptor for the card remote
commander
PRESET button page 7
QMicrophone page 16
Note
Do not cover the microphone, the handsfree
function may not work properly.
*1 When a Bluetooth audio device (supports AVRCP
of Bluetooth technology) is connected. Depending
on the device, certain operations may not be
available.
*2 In the case of a CD changer being connected;
when (SOURCE) is pressed, “CD” and the unit
number will appear in the display. Furthermore, if
(MODE) is pressed, you can switch the changer.

12
Card remote commander
RM-X304
The following buttons on the card remote
commander have also different buttons/functions
from the unit. Remove the insulation film before
use (page 8).
qk <(.)/,(>) buttons
To control radio/CD/Bluetooth audio, the
same as (SEEK) –/+ on the unit.
Setup, sound setting, etc., can be operated by
<,.
ql DSPL (display) button page 13
To change display items.
w; VOL (volume) +/– button
To adjust volume.
wa ATT (attenuate) button
To attenuate the sound. To cancel, press
again.
ws SEL (select)/ (handsfree) button
The same as the select button on the unit.
wd M(+)/m(–) buttons
To control CD, the same as (1)/(2)
(ALBUM –/+) on the unit.
Setup, sound setting, etc., can be operated by
Mm.
wf SCRL (scroll) button
To scroll the display item.
wg Number buttons
To receive stored stations (press); store
stations (press and hold).
Note
If the unit is turned off and the display disappears, it
cannot be operated with the card remote commander
unless (SOURCE) on the unit is pressed, or a disc is
inserted to activate the unit first.
OFF
DSPL SCRL
SEL SOURCE MODE
132
465
ATT
VOL
+
–
+
–
3ws
qs
1
wf
qk
wa
w;
ql
wg
wd

13
Radio
Storing and receiving stations
Caution
When tuning in stations while driving, use Best
Tuning Memory (BTM) to prevent an accident.
Storing automatically — BTM
1Press (SOURCE) repeatedly until
“TUNER” appears.
To change the band, press (MODE)
repeatedly. You can select from FM1, FM2,
FM3, MW, SW1 or SW2.
2Press and hold (BTM) until “BTM”
flashes.
The unit stores stations in order of frequency
on the number buttons.
A beep sounds when the setting is stored.
Storing manually
1While receiving the station that you
want to store, press and hold a
number button ((1) to (6)) until
“MEM” appears.
Note
If you try to store another station on the same number
button, the previously stored station will be replaced.
Receiving the stored stations
1Select the band, then press a number
button ((1) to (6)).
Tuning automatically
1Select the band, then press (SEEK) +/–
to search for the station.
Scanning stops when the unit receives a
station. Repeat this procedure until the
desired station is received.
Tip
If you know the frequency of the station you want to
listen to, press and hold (SEEK) +/–to locate the
approximate frequency, then press (SEEK) +/–
repeatedly to fine adjust to the desired frequency
(manual tuning).
CD
Display items
ASource
BTrack name*1, Disc/artist name*1, Artist
name*1, Album number*2, Album name*1,
Track number/Elapsed playing time, Clock
*1 The information of a CD TEXT, MP3/WMA is
displayed.
*2 Album number is displayed only when the album is
changed.
To change display items B, press (DSPL).
Tip
Displayed items will differ depending on the disc type,
recording format and settings. For details on MP3/
WMA, see page 21.
Repeat and shuffle play
1During playback, press (3) (REP) or
(4) (SHUF) repeatedly until the
desired setting appears.
*When an MP3/WMA is played.
To return to normal play mode, select “ OFF”
or “SHUF OFF.”
Select To play
TRACK track repeatedly.
ALBUM* album repeatedly.
SHUF ALBUM* album in random order.
SHUF DISC disc in random order.

14
Bluetooth (Handsfree calling
and Music streaming)
Bluetooth operations
To use the Bluetooth function, the following
procedure is necessary.
1Pairing
When connecting Bluetooth devices for the
first time, mutual registration is required. This
is called “pairing.” This registration (pairing)
is required only for the first time, as this unit
and the other devices will recognize each
other automatically from the next time. You
can pair up to 8 devices. (Depending on the
device, you may need to input a passcode for
each connection.)
2Connection
To use the device after pairing is made, start
the connection. Sometimes pairing allows to
connect automatically.
3Handsfree calling/Music streaming
You can talk handsfree and listen to music
when the connection is made.
Pairing
First, register (“pair”) a Bluetooth device
(cellular phone, etc.) and this unit with each
other. You can pair up to 8 devices. Once pairing
is established, there is no need for pairing again.
1Place the Bluetooth device within 1 m
(3 ft) of this unit.
2Press and hold (BT) until “ ” flashes
(about 5 seconds).
The unit enters pairing standby mode.
3Set the Bluetooth device to search for
this unit.
A list of detected devices appears in the
display of the device to be connected. This
unit is displayed as “XPLOD” on the device
to be connected.
4If Passcode*input is required on the
display of the device to be connected,
input “0000.”
This unit and the Bluetooth device memorize
each other’s information, and when pairing is
made, the unit is ready for connection to the
device.
“ ” flashes and then stays lit after pairing is
complete.
5Set the Bluetooth device to connect to
this unit.
“ ” or “ ” appears when the connection is
made.
*Passcode may be called “passkey,” “PIN code,” “PIN
number” or “Password,” etc., depending on the
device.
Note
Pairing standby mode is not released until the
connection is made.
Support site
Customers in Latin America:
http://esupport.sony.com/ES/LA/
Customers in Pan Asia:
http://www.sony-asia.com/section/support
http://www.sony-asia.com/caraudio/
flashing
XXXXXXX
DR-BT30Q
XPLOD
XXXX
Input passcode.
“0000”

15
About Bluetooth icons
The following icons are used by this unit.
Connection
If pairing has already been achieved, start
operation from here.
To switch the Bluetooth signal
output of this unit to on
To use the Bluetooth function, switch the
Bluetooth signal output of this unit to on.
1Press and hold (BT) until “ ” lights
(about 3 seconds).
Bluetooth signal is switched to on.
Connecting a cellular phone
1Be sure that both this unit and the
cellular phone are switched to
Bluetooth signal on.
2Connect to this unit using the cellular
phone.
“ ”appears when the connection is made.
Connecting the last-connected
cellular phone from this unit
1Be sure that both this unit and the cellular
phone are switched to Bluetooth signal on.
2Press (SOURCE) repeatedly until “BT
PHONE” appears.
3Press (handsfree).
“ ” flashes while the connection is being
made. And then “ ” stays lit when the
connection is made.
Note
While streaming Bluetooth audio, you cannot connect
from this unit to the cellular phone. Connect from the
cellular phone to this unit instead. A connecting noise
may be heard over playback sound.
Tip
With Bluetooth signal on: when the ignition is switched
to on, this unit reconnects automatically to the last-
connected cellular phone. But automatic connection
also depends on the cellular phone’s specification. If
this unit does not reconnect automatically, connect
manually.
Connecting an audio device
1Be sure that both this unit and the
audio device are switched to
Bluetooth signal on.
2Connect to this unit using the audio
device.
“ ” appears when the connection is made.
Connecting the last-connected audio
device from this unit
1Be sure that both this unit and the audio device
are switched to Bluetooth signal on.
2Press (SOURCE) repeatedly until “BT
AUDIO” appears.
3Press (6).
“ ” flashes while the connection is being
made. And then “ ” stays lit when the
connection is made.
Handsfree calling
Check that the unit and cellular phone are
connected beforehand.
Receiving calls
When receiving a call, a ring tone is output from
your car speakers.
1Press (handsfree) when a call is
received with a ring tone.
The phone call starts.
To end a call
Press (handsfree) again, or (OFF).
To reject an incoming call, press and hold
(handsfree) for 2 seconds.
lit:
flashing:
off:
Bluetooth signal on
Pairing standby mode
Bluetooth signal off
lit:
flashing:
off:
Connection successful
Connecting
No connection
lit:
flashing:
off:
Connection successful
Connecting
No connection
continue to next page t

16
Mic Gain adjustment
You can switch between two volume levels
(“LOW” or “HI”) to set a suitable level for the
other party during a call.
1Press (5) during a call.
The item changes as follows:
MIC-LOW yMIC-HI
Note
The microphone of this unit is located on the rear of
the front panel (page 11). Do not cover the
microphone with tape, etc.
Making calls
In the case of making calls from this unit, redial
is used.
1Press (SOURCE) repeatedly until “BT
PHONE” appears.
2Press and hold (handsfree) for 3
seconds or more.
The phone call starts.
To end a call
Press (handsfree) again, or (OFF).
To call another phone, use your cellular phone,
and then transfer the call.
For call transfer details, check the following.
Call transfer
In order to activate/deactivate the appropriate
device (this unit/cellular phone), check the
following.
1Press and hold (handsfree) or use
your cellular phone.
For details on cellular phone operation, refer to
your cellular phone manual.
Note
Depending on the cellular phone, handsfree
connection may be cut off when call transfer is
attempted.
Voice Dial Activation
You can activate voice dialing with a cellular
phone connected to this unit by saying the voice
tag stored on the cellular phone, then make a call.
1Press (SOURCE) repeatedly until “BT
PHONE” appears.
2Press (handsfree).
The cellular phone enters voice dialing mode.
3Say the voice tag stored on the cellular
phone.
Your voice is recognized, and the call is
made.
Notes
•Check that unit and cellular phone are connected
beforehand.
•Store a voice tag on your cellular phone beforehand.
•If you activate voice dialing with a cellular phone
connected to this unit, this function may not always
work in some cases.
•Noises such as the engine running may interfere
with sound recognition. In order to improve
recognition, operate under conditions where noise is
minimized.
•Voice dialing may not work in some situations,
depending on the effectiveness of the cellular
phone’s recognition function. For details, see the
support site (page 25).
Tips
•Speak in the same way as you did when you stored
the voice tag.
•Store a voice tag while seated in the car, via this unit
with “BT PHONE” source selected.
Music streaming
Listening to music from an audio
device
You can listen to music of an audio device on this
unit if the audio device supports A2DP
(Advanced Audio Distribution Profile) of
Bluetooth technology.
1Turn down the volume on this unit.
2Press (SOURCE) repeatedly until “BT
AUDIO” appears.
3Operate the audio device to start
playback.
4Adjust the volume on this unit.
Adjusting the volume level
The volume level is adjustable for any difference
between the unit and the Bluetooth audio device.
1Start playback of the Bluetooth audio device at
a moderate volume.
2Set your usual listening volume on the unit.
3Press the select button repeatedly until “BTA”
appears, and rotate the volume control dial to
adjust the input level (–8 dB to +18 dB).

17
Operating an audio device with this
unit
You can perform the following operations on this
unit if the audio device supports AVRCP (Audio
Video Remote Control Profile) of Bluetooth
technology. (The operation differs depending on
the audio device.)
*Depending on the device, it may be necessary to
press twice.
Operations other than the above should be
performed on the audio device.
Notes
•During audio device playback, information such as
track number/time, playback status, etc., of a
connected audio device is not displayed on this unit.
•Even if the source is changed on this unit, playback
of the audio device does not stop.
Tip
You can connect a cellular phone that supports A2DP
(Advanced Audio Distribution Profile) as an audio
device and listen to music.
Deleting registration of all
paired devices
1Press (OFF).
This unit is turned off.
2If “ ” lights, press and hold
(BT) until “ ” turns off.
3Press and hold the select button.
4Press the select button repeatedly
until “BT INIT” appears.
5Press (SEEK) +.
Initializing starts.
It takes 3 seconds to cancel all registration.
Do not turn off the power while “INITIAL” is
flashing.
Other functions
Changing the sound settings
Adjusting the sound
characteristics
1Press the select button repeatedly
until the desired item appears.
2Rotate the control dial to adjust the
selected item.
After 5 seconds, the setting is complete and
the display returns to normal play/reception
mode.
The following items can be set (follow the page
reference for details):
To Press
Play (6) (PAUSE)* on this unit.
Pause (6) (PAUSE)* on this unit.
Skip tracks SEEK –/+ (./>) [once for
each track]
EQ3
Selects an equalizer curve from 7 music types.
LOW*1, MID*1, HI*1(page 18)
BAL (Balance)
Adjusts the sound balance between the left and
right speakers.
FAD (Fader)
Adjusts the relative level between the front and
rear speakers.
SUB*2(Subwoofer volume)
Adjusts the subwoofer volume.
(“ATT” is the lowest setting.)
AUX*3(AUX level)
Adjusts the volume level for each connected
auxiliary equipment: “+18 dB” – “0 dB” – “–8
dB.”
This setting negates the need to adjust the
volume level between sources.
BTA*4(BT-Audio level)
Adjusts the volume level for each connected
Bluetooth audio device. This setting negates the
need to adjust the volume level between sources
(page 16).
Adjustable level: “+18 dB” – “0 dB” – “–8 dB.”
*1 When EQ3 is activated.
*2 When the audio output is set to “SUB-OUT”
(page 18).
*3 When AUX source is activated.
*4 When Bluetooth audio source is activated
(page 16).

18
Customizing the equalizer curve
— EQ3
“CUSTOM” of EQ3 allows you to make your
own equalizer settings.
1Select a source, then press the select
button repeatedly to select “EQ3.”
2Rotate the control dial to select
“CUSTOM.”
3Press the select button repeatedly
until “LOW,” “MID” or “HI” appears.
4Rotate the control dial to adjust the
selected item.
The volume level is adjustable in 1 dB steps,
from –10 dB to +10 dB.
Repeat steps 3 and 4 to adjust the equalizer
curve.
To restore the factory-set equalizer curve,
press and hold the select button before the
setting is complete.
After 5 seconds, the setting is complete and
the display returns to normal play/reception
mode.
Tip
Other equalizer types are also adjustable.
Adjusting setup items — SET
1Press and hold the select button.
The setup display appears.
2Press the select button repeatedly
until the desired item appears.
3Rotate the control dial to select the
setting (example “ON” or “OFF”).
4Press and hold the select button.
The setup is complete and the display returns
to normal play/reception mode.
Note
Displayed items will differ, depending on the source
and setting.
The following items can be set (follow the page
reference for details):
CLOCK-ADJ (Clock Adjust) (page 8)
BEEP
Activates the beep sound: “ON,” “OFF.”
AUX-A*1(AUX Audio)
Activates the AUX source display: “ON,”
“OFF” (page 19).
A.OFF
Shuts off automatically after a desired time
when the unit is turned off: “NO,” “30S
(seconds),” “30M (minutes),” “60M (minutes).”
SUB/REAR*1
Switches the audio output: “SUB-OUT”
(subwoofer), “REAR-OUT” (power amplifier).
B.OUT (Black Out)
Turns off the illumination automatically for any
source (e.g., during CD playback/radio
reception, etc.) if no operation is performed for
5 seconds: “ON,” “OFF.”
To bring the light back on, press any button on
the unit. (When activated, remote operation is
unavailable.)
DEMO
(Demonstration)
Activates the demonstration: “ON,” “OFF.”
DIM (Dimmer)
Changes the display brightness: “ON,” “OFF.”
A.SCRL (Auto Scroll)
Scrolls long items automatically: “ON,” “OFF.”
LOCAL (Local Seek Mode)
– “ON”: to only tune into stations with stronger
signals.
– “OFF”: to tune normal reception.
MONO*2(Monaural Mode)
Selects monaural reception mode to improve
poor FM reception: “ON,” “OFF.”
LPF*3(Low Pass Filter)
Selects the subwoofer cut-off frequency: “OFF,”
“80Hz,” “100Hz,” “120Hz,” “140Hz,” “160Hz.”
LPF NORM/REV*3(Low Pass Filter Normal/
Reverse)
Selects the phase when the LPF is on: “NORM,”
“REV.”
HPF (High Pass Filter)
Selects the front/rear speaker cut-off frequency:
“OFF,” “80Hz,” “100Hz,” “120Hz,” “140Hz,”
“160Hz.”
LOUD (Loudness)
Reinforces bass and treble for clear sound at low
volume levels: “ON,” “OFF.”
BTM (page 13)
BT INIT*1(page 17)
*1 When the unit is turned off.
*2 When FM is received.
*3 When the audio output is set to “SUB-OUT.”

19
Using optional equipment
Auxiliary audio equipment
By connecting an optional portable audio device
to the AUX input jack (stereo mini jack) on the
unit and then simply selecting the source, you
can listen on your car speakers. The volume level
is adjustable for any difference between the unit
and the portable audio device. Follow the
procedure below:
Connecting the portable audio
device
1Turn off the portable audio device.
2Turn down the volume on the unit.
3Connect to the unit.
*Be sure to use a straight type plug.
Adjust the volume level
Be sure to adjust the volume for each connected
audio device before playback.
1Turn down the volume on the unit.
2Press (SOURCE) repeatedly until “AUX”
appears.
“AUX FRONT IN” appears.
3Start playback of the portable audio device at a
moderate volume.
4Set your usual listening volume on the unit.
5Adjust the input level (page 17).
CD changer
Selecting the changer
1Press (SOURCE) repeatedly until “CD”
appears.
2Press (MODE) repeatedly until the desired
changer appears.
Playback starts.
Skipping albums and discs
1During playback, press (1)/(2) (ALBUM –/
+).
Repeat and shuffle play
1During playback, press (3) (REP) or (4)
(SHUF) repeatedly until the desired setting
appears.
To return to normal play mode, select “ OFF”
or “SHUF OFF.”
AUX
AUX
Connecting cord*
(not supplied)
To skip Press (1)/(2) (ALBUM –/+)
album and release (hold for a
moment).
album
continuously
within 2 seconds of first
releasing.
discs repeatedly.
discs
continuously
then, press again within 2
seconds and hold.
Select To play
DISC disc repeatedly.
SHUF
CHANGER
tracks in the changer in random
order.
SHUF ALL tracks in all units in random
order.
Unit number Disc number

20
Rotary commander RM-X4S
Attaching the label
Attach the indication label depending on how
you mount the rotary commander.
Location of controls
The corresponding buttons on the rotary
commander control the same functions as those
on this unit.
The following controls on the rotary commander
require a different operation from the unit.
•ATT (attenuate) button
To attenuate the sound. To cancel, press again.
•SEL (select) button
The same as the select button on the unit.
•PRESET/DISC control
CD: The same as (1)/(2) (ALBUM –/+) on
the unit (push in and rotate).
Radio: To receive stored stations (push in and
rotate).
•VOL (volume) control
The same as the control dial on the unit (rotate).
•SEEK/AMS control
The same as (SEEK) +/– on the unit (rotate, or
rotate and hold).
•DSPL (display) button
To change display items.
Changing the operative direction
The operative direction of the controls is factory-
set as shown below.
If you need to mount the rotary commander on
the right hand side of the steering column, you
can reverse the operative direction.
1While pushing the VOL control, press and
hold (SEL).
SEL
DSPL
MODE
SEL
DSPL
MODE
OFF
ATT
SEL
SOURCE
DSPL
MODE
OFF
VOL SEEK/AMS
PRESET/
DISC
To increase
To decrease