Sound Storm S638BTA User manual

1
Installation
DIN front-mount installation
DIN rear-mount installation
Removing the head unit
Detaching the front panel
Replacing the front panel
Wiring diagram
General controls
Radio controls
Audio controls
CD/MP3 Playback controls
How to select MP3 files
Controls behind faceplate
USB and Front side AUX IN operations
Remote control functions
How to use bluetooth in your car audio
Specifications
2
2
3
3
4
4
5
6
7
8
9
10
10
11
12
13-14
15
CONTENTS

2
INSTALLATION
(Fig.1)
Use only the parts included with the unit to
ensure proper installation.
The use of unauthorized parts can cause
malfunctions.

3
INSTALLATION
Before removing the bezel, press the
Removing the head unit
DIN rear mount installation (uses factory radio mounting bracket)
RELEASE button to remove the front
panel.
Then insert the levers supplied with the
unit into the grooves at both sides of the
unit as shown in figure until they click.
Pulling the levers makes it possible to
remove the unit from the dashboard.
Release Button
press RELEASE to release
the front panel...
Select a position on the head unit housing
where the screw holes of the factory radio
bracket align with the threaded screw holes on
sides of the head unit. Insert screws in two
such locations on each side, and tighten
securely.
NOTE: For the rear-mount installation, do
not use the trim piece, backstrap or mount-
ing case.
Insert fingers into the groove in the right
side of the frame and pull out to remove
the frame. (You can also remove the
frame from the left side.)

4
DETACHING THE FRONT PANEL
Press the RELEASE button to release the panel
from right side of the head unit.
Grasp the right side of the panel and pull to
remove it.
Immediately place the front panel in its protective
case for safe and clean storage.
Do not drop front panel.
When detaching or reinstalling, do not put
pressure on the display
Do not touch the contacts on the panel or the
main unit body - doing so may result in poor
electrical contact.
Dirt or foreign substances can be removed with a
clean, dry cloth.
Do not expose the panel to high temperatures or
direct sunlight.
Do not permit volatile agents or solvents to
contact the front panel.
Do not attempt to disassemble the front panel.
Push the front panel into the main body. You
should hear a "click"
NOTE: If the panel fails to lock into position
p
roperly, the function of some controls may
be impaired, and some segments of the
display may not become illuminated. If this
occurs, press RELEASE and reinstall the
front panel.
REINSTALLING THE FRONT PANEL
Be careful when handling the front panel!
1.
2.
3.
4.
5.
6.
7.
Release Button
press RELEASE to release
the front panel...

5
WIRING CONNECTION
GREY +
GREY/BLACK –
FRONT
RIGHT
SPEAKER
VIOLET +
VIOLET/BLACK –
REAR
RIGHT
SPEAKER
FRONT
LEFT
SPEAKER
REAR
LEFT
SPEAKER
+ WHITE
– WHITE/BLACK
+ GREEN
– GREEN/BLACK
ISO A/B PLUG
AMP
TURN ON BLUE
BLUE/WHITE
IGNITION SWITCH (12 V)
RED
CONSTANT
12 VOLTS
YELLOW
BLACK
GROUND (–)
ANTENNA CONTROL
L (WHITE)
SUB WOOFER
LINE IN
R (RED)
L (WHITE)
LINE OUT
(REAR)
R (RED)
LINE OUT
(FRONT)
L (WHITE)
ANTENNA
CONNECTOR
ISO CONNECTOR
R (RED)
B
A
BLUETOOTH
MICROPHONE
ELECTRICAL CONNECTIONS
AUXILIARY INPUT FEATURE:
This CD Receiver features an Auxiliary Input jack on the back side of the unit.
An external audio source such as a portable audio player or a DVD player may be connected via
this input jack.

6
MP3/CDR/CDRW playback S638BTA
80W
PREAMP
OUTPUT
5V x4CH
OPERATION
POWER Press any button to turn unit ON. To turn head
unit off, press and hold POWER.
GENERAL CONTROLS
RELEASE Press to release and remove the front panel.
DISP Selects radio frequency or clock display.
To set the clock:
1. With clock display selected, hold down (DISP) button until
clock display starts flashing.
2. Rotating VOL left to change minutes, VOL right to change
hours.
3. Press (DISP) button to start clock
BEEP MODE When press the AUDIO button for more than 2 seconds, it is activated as
selecting mode of these function.
BEEP ON: BEEP sound can hear from speaker when the buttons are pressed.
The Liquid Crystal Display will display the current state of the unit.
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF VOL
VOL
LOCAL
AUDIO
DX/LOCAL
VOL
STEREO
AUDIO
STEREO ON/OFF
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
STEREO
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
WOOF ESP
AUDIO
ESP 10/40
VOL
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF VOL
VOL
LOCAL
AUDIO
DX/LOCAL
VOL
STEREO
AUDIO
STEREO ON/OFF
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
STEREO
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
WOOF ESP
AUDIO
ESP 10/40
VOL
SCROLL MODE When press the AUDIO button for more than 2 seconds, it is activated
as selecting mode of these function.
SCROLL 1: Unit displays song details but no text scrolling.
SCROLL 2: Unit displays song details and scrolls the text information to the left.

7
MP3/CDR/CDRW playback S638BTA
80W
PREAMP
OUTPUT
5V x4CH
OPERATION
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF VOL
VOL
LOCAL
AUDIO
DX/LOCAL
VOL
STEREO
AUDIO
STEREO ON/OFF
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
STEREO
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
WOOF ESP
AUDIO
ESP 10/40
VOL
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF VOL
VOL
LOCAL
AUDIO
DX/LOCAL
VOL
STEREO
AUDIO
STEREO ON/OFF
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
STEREO
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
WOOF ESP
AUDIO
ESP 10/40
VOL
STATION PRESETS Six numbered preset button store and recall stations
for each band.
Storing a station:
1. Select a band (if needed)
2. Select a station
3. Hold a preset button longer than one second. Preset station number
appears in the display when station is saved.
Recall a station:
1. Select band (if needed)
2. Press a preset button for less than one second to select stored station.
RADIO CONTROLS
TUNE BUTTONS When pressed for less than 1 second, these keys operate as
SEEK tuning mode.
When pressed longer than 1 sec., they are operated as MANUAL tuning mode.
If the keys are not pressed for 3 seconds, they will return to SEEK mode again.
AS/PS Select six strong stations and store them in current band.
1. Select a band (if needed)
2. Hold A/PS button for more than three seconds. The new stations replace stations
already stored in that band.
Preset Scan
Scan stations stored in current band
1. Select a band (if needed)
2. Touch A/PS for more than one second but less than three seconds. Radio pauses
for five seconds at each station. Touch A/PS again to stop scanning when desired
station is reached.
SCAN This key is operated as RADIO SCAN. The operation is similar as normal
search but different thing is holding 5 seconds on every station detected in
RADIO SCAN mode.
BAND Push this switch to select the desired band. Selection is made in regular
sequence as FM-AM.
MENU MODE When press this button for more than 2 seconds, it is activated as selecting mode of
these function.
STEREO/MONO MODE When press AUDIO button for more than 2 seconds, it is activated as select-
ing mode of these function.
When FM stations are weak and are disturbed, listening can be improved by selecting MONO.
LOCAL/DX MODE When press AUDIO button for more than 2 seconds, it is activated as selecting
mode of these function.
“Local” position in areas with strong signals to let radio stop at only strong stations during manual
tuning (LOC appears). Press to Distant position in areas with weak signals to listen to all stations.

8
MP3/CDR/CDRW playback S638BTA
80W
PREAMP
OUTPUT
5V x4CH
OPERATION
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF VOL
VOL
LOCAL
AUDIO
DX/LOCAL
VOL
STEREO
AUDIO
STEREO ON/OFF
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
STEREO
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
WOOF ESP
AUDIO
ESP 10/40
VOL
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF VOL
VOL
LOCAL
AUDIO
DX/LOCAL
VOL
STEREO
AUDIO
STEREO ON/OFF
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
STEREO
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
WOOF ESP
AUDIO
ESP 10/40
VOL
AUDIO BUTTON and ROTARY CONTROL Press the button repeatedly to access
Volume, Bass, Treble, Balance and Fader functions. Then use the knob to adjust
the selected function.
AUDIO CONTROLS
SOURCE By pressing this key, user can select AUX/TUNER/CD-MP3/
USB mode.
SUBWOOFER Press this button to engage subwoofer output
DSP MODE When press AUDIO button for more than 2 seconds, it is
activated as selecting mode of these function.
POP, ROCK, CLASSIC, FLAT or DSP OFF selected by rotary VOL left or right
LOUD MODE When press AUDIO button for more than 2 seconds, it is
activated as selecting mode of these function.
LOUD ON/OFF mode is selected by rotary VOL left or right. Increase the level
of bass output.
SUBWOOFER When press AUDIO button for more than 2 seconds, it is
activated as selecting mode of these function.
SUBWOOFER output selected by rotary VOL left or right.
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF VOL
VOL
LOCAL
AUDIO
DX/LOCAL
VOL
STEREO
AUDIO
STEREO ON/OFF
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
STEREO
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
WOOF ESP
AUDIO
ESP 10/40
VOL
MUTE Press this button to silence the receiver. Press again to return to normal operation.

9
MP3/CDR/CDRW playback S638BTA
80W
PREAMP
OUTPUT
5V x4CH
OPERATION
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF VOL
VOL
LOCAL
AUDIO
DX/LOCAL
VOL
STEREO
AUDIO
STEREO ON/OFF
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
STEREO
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
WOOF ESP
AUDIO
ESP 10/40
VOL
TUNE/TRACK BUTTONS Press and release
to advance to next track or to return to the
beginning of the current track (track number
will be displayed). Press and hold to fast
forward or reverse. Play will begin at the point
when you release the button.
CD/MP3 PLAYBACK CONTROLS
PAUSE Press to pause CD playback. Press
again to resume playback
EJECT Press to eject CD
SHUFFLE Press to play ALL tracks
on the CD in random order.
REPEAT Press and release to continuously
repeat same track. Press again to stop
repeat cycle.
CD SCAN Press to hear first several sec-
onds of each track on current disc. Press
again to stop intro and listen to intro last
previewed.
CD/MP3 Operation
To PLAY a CD gently insert a CD with the label side up into the disc slot. It will automatically load and
begin playing the first track.
To EJECT a CD press EJECT to stop the CD playback and eject the CD from the slot. The receiver will
automaticvally switch to radio mode.
To PAUSE a CD press PAUSE to stop playback temporarily. Press again to resume playback.
To SKIP TRACKS press the or key to choose the next or preceding track.
To FAST FORWARD or REVERSE press and hold the or key to the desired location on the
disc. Releasing the button starts playback at the location.
To REPEAT a TRACK press REPEAT to continuously repeat the current track. Press again to return to
normal playback mode.
To PREVIEW ALL TRACKS press CD SCAN to play the first several seconds of each track. Press it again
to stop an play the current track being previewed.
To PLAY TRACKS IN RANDOM ORDER press SHUFFLE to play ALL tracks on the CD in random mode.
Press again to cancel this function.
-10/+10 TRACK DOWN SELECT:
(In case of MP3 files)
+10/-10 TRACK UP SELECT:
(In case of MP3 files)
ESP MODE When press AUDIO button for
more than 2 seconds, it is activated as 10 sec.
or 40 sec. of ESP mode can be selected.
TOP Press to play first song of disc.Press to play first song of disc.

10
Controls behind faceplate
OPERATION
How to select MP3 files
Searching Track:
• Press and hold “AS/PS”, then search track is activated. First digit will flash.
• Rotate “VOL knob to right or left”, select first digit desired.
• Press “AUDIO” button, then the first digit is fixed and second digit will flash.“AUDIO” button, then the first digit is fixed and second digit will flash.“AUDIO” button, then the first digit is fixed and second digit will flash.
• Rotate “VOL knob to right or left”, select 2�nd 3�rd respectively.Rotate “VOL knob to right or left”, select 2�nd 3�rd respectively.“VOL knob to right or left”, select 2�nd 3�rd respectively.
• Then automatically the song selected will start.
Searching Directory:
• Press and hold “AS/PS”. Press “AS/PS” again, then directory search is activated.
• Rotate “VOL knob to right or left”, you can select the desired directory.
• Press “AUDIO” button again, then the directory is fixed and the first file name is displayed.
• Rotate clockwise to select the desired song.
• Press “AUDIO” button, then the song selected will start.
Searching File Name:
• Press and hold “AS/PS”. Press “AS/PS” twice, then character search mode is activated. “*” character is
displayed.
• Rotate “VOL knob to right or left”, you can select the desired letter.
• Press “AUDIO” button longer than 2 sec.
• The song with the same character you selected is displayed.
• Rotate clockwise to select the desired song.
• Press “AUDIO” button, then the song selected will start.
RESET AUX IN
CD Loading/unloading slot
LED This LED flashes when the faceplate is
removed.
RESET Press this button with a ballpoint pen or other thin object.
The reset button is to be activated for the following reason:
Initial installation of the unit when all wiring is completed.
All the function button do not operate.
Error symbol on the display.
NOTE: If the unit does not function properly after you have pressed
the RESET button, clean the socket and the connector on the rear of
the front panel with a cotton swab soaked in isopropyl alcohol and
try again.

11
MP3/CDR/CDRW playback S638BTA
80W
PREAMP
OUTPUT
5V x4CH
OPERATION
USB and front side AUX IN operations
* IMPORTANT INFORMATION:
BECAUSE OF THE GREAT VARIETY OF PRODUCTS WITH USB PORTS AND THEIR SOMETIMES
QUITE MANUFACTURER-SPECIFIC FUNCTIONS WE CAN NEITHER GUARANTEE THAT ALL DEVICES
WILL BE RECOGNIZED NOR THAT ALL OPERATING OPTIONS THAT ARE POSSIBLE IN THEORY
WILL ACTUALLY WORK
CD MULTI SECTION MODE When press AUDIO button for more than 2
seconds, it is activated as selecting mode of these function.
CD MULTI ON/OFF mode is selected by rotary VOL left or right
CD MULTI ON: Read multi section CD.
CD MULTI OFF: Read first section only.
USB Port
Enhanced control of connected Portable Media such as digital
MP3 Players, by using function keys on the main unit or the
remote control unit.
This unit features the latest ID3 Tag support, which allows you to
see the song�s name and which folder it�s located in, on the LCD
display.
AUX IN
Convenient easy to use front “AUX IN” input jack, allows easy
connection of Portable Media and other digital MP3 Players.
MULT ON/OFFMULT
DSP
AUDIO
2 sec.
AUDIO
AUDIO
DSP
AUDIO
2 sec.
POP --- ROCK --- CLASSIC --- FLAT --- DSP OFF
VOL
LOUD ON/OFF
DSP
AUDIO
2 sec.
AUDIO
LOUD
AUDIO
LOUD
VOL
WOOF ON/OFF
WOOF VOL
VOL
LOCAL
AUDIO
DX/LOCAL
VOL
STEREO
AUDIO
STEREO ON/OFF
VOL
BEEP
AUDIO
BEEP ON/OFF
VOL
SCROLL
AUDIO
SCROLL 1/2
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
ESP 10/40
VOL
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
STEREO
AUDIO
BEEP
AUDIO
SCROLL
AUDIO
MULT
AUDIO
DSP
AUDIO
2 sec.
AUDIO
AUDIO
LOUD WOOF ESP
AUDIO
WOOF ESP
AUDIO
ESP 10/40
VOL

12
Remote controls functions
OPERATION
1. POWER ON / OFF
2. ANSWER A CALL
3. VOLUME +
4. END A CALL
5. BAND / CD PLAY / PAUSE
6. TUNE / SEEK
7. MENU / DISPLAY
8. CD REPEAT /
AUTO STORE/PRESET SCAN
9. VOLUME -
10. MUTE / MODE
11. CD PLAYER FIRST SONG
12. CD SCAN
13. PHONE NUMBER /
BUTTON 1-6: STATION
PRESETS
14. CD SHUFFLE
15. 10 TRACK UP SELECT
16. 10 TRACK DOWN SELECT
17. STEREO / MONO MODE
18. RADIO SCAN / PHONE
19. SUBWOOFER
tel /*#
power
2
intro
10-dn10-up
3 41
6 7 85
top
menu
disp
band
volume
up
volume
down
shuffle
st/mo scan sub
tune seek
as/ps
repeat mute
mode
09
1
5
32 4
6
7
89
10
11
12 13
14
15
16
17 18
19
Note: You can dial calls with this remote control. Please refer to “Making Calls Using the
Dial Keypad”.

13
HOW TO PERFORM PAIRING
Before you can dial out from the car stereo, you must first perform PAIRING. Pairing is
a procedure used to connect 2 Bluetooth devices together.
1. Press and hold AUDIO button for 2 seconds.
2. Press AUDIO button repeatedly until “PAIRING” displays.
3. Press and hold AUDIO button to engage paring mode. “PAIRING” blinks on the
display.
4. Turn on the Bluetooth feature of your mobile phone. Perform “Add Bluetooth device”
from your mobile phone. The mobile will search for any Bluetooth devices within the
range. Select “BHF207C” and enter Passkey: “0000” to connect to the car audio.
(Please refer to the instruction manual of your mobile phone for Bluetooth Pairing).
5. The LCD will display “PAIRED” after successful pairing.
Note:
• If “DISCONN” shows instead of “PAIRING”, it means the head unit currently is
paired with another device. Press and hold AUDIO button to disconnect the con-
nection and perform steps above again.
• “BHF207C” is the Bluetooth device name of the car stereo.
• Refer to your cellular user manual for the proper procedures of pairing Bluetooth
devices.
Audio Streaming
If your phone is “A2DP” format compatible, then you can play music in your mobile
and the sound will be transferred to car head unit.
1. Make sure your mobile and the unit is properly paired and connected.
2. Play the music through your mobile music player software.
3. Press SOURCE repeatedly until “BT-PLAY” appears in the display. The sound will
be transferred to the head unit.
Making Calls Using the Dial Keypad
You can make calls directly from the supplied Dial Keypad. Before you make calls, make sure that the devices
are properly paired and the keypad cable properly connected to the back of the head unit.
1. Press PHONE button or press and hold (*) on the keypad.
2. Enter the phone number via the keypad and press button to dial out. Press button to make
corrections when entering numbers.
3. Press button to end call.
Tips: Press PHONE on the head unit is the same as press and hold (*) on the keypad.
Answering / Hanging Up
To answer a call, press the button on the dial keypad. Speak directly to the keypad�s microphone.
Once you have finished your conversation, press the button to hang up.
Calls (Outgoing, Incoming)
The unit stores all the incoming and outgoing calls. Use this feature to check the numbers and make calls from it.
“OUT NUM” – outgoing calls made through the dial keypad.
1. Press PHONE then press and hold AUDIO button for 2 seconds. “OUT NUM” displays.
2. Press and hold AUDIO button again.
3. Rotate volume knob to search for entries and press to call.
“IN NUM” – incoming calls received.
1. Press PHONE then press and hold AUDIO button for 2 seconds.
2. Press AUDIO button repeatedly until “IN NUM” displays.
3. Press and hold AUDIO button again.
4. Rotate volume knob to search for entries and press to call.
Adding Contacts
The unit can save contact telephone number for quick access.
1. Press PHONE then press and hold AUDIO button for 2 seconds.
2. Press AUDIO button repeatedly until “ADD NUM” displays.
3. Press and hold AUDIO button again.
4. Using volume knob, enter the name of the contact. Press AUDIO to save each character entered. Press
and hold AUDIO to save name.
5. Enter the phone number. Press AUDIO to save each number entered.
6. Press and hold AUDIO to save entry.
HOW TO USE BLUETOOTH IN YOUR CAR AUDIO
MP3/CDR/CDRW playback S638BTA
80W
PREAMP
OUTPUT
5V x4CH
MIC
13
2
46
5
7
#
9
8
0

14
Finding Contacts
After adding contacts, you can use this feature to find them.
1. Press PHONE then press and hold AUDIO button for 2 seconds.
2. Press AUDIO button repeatedly until “FIND NUM” displays.
3. Press and hold AUDIO button again.
4. Using volume knob, select the name of the contact and press to call.
How to Set Incoming Call Melody
1. Press PHONE then press and hold AUDIO button for 2 seconds.
2. Press AUDIO button repeatedly until “MELODY” displays.
3. Rotate volume knob to the desired melody.
How to Set Incoming Call Ring Volume
1. Press PHONE then press and hold AUDIO button for 2 seconds.
2. Press AUDIO button repeatedly until “RING” displays.
3. Rotate volume knob to the desired level.
How to Set Conversation Volume
1. Press PHONE then press and hold AUDIO button for 2 seconds.
2. Press AUDIO button repeatedly until “TEL” displays.
3. Rotate volume knob to the desired level.
Disconnect Paired Devices
You can disconnect to an already paired Bluetooth device from your car stereo.
1. Press PHONE then press and hold AUDIO button for 2 seconds.
2. Press AUDIO button repeatedly until “DISCONN” displays.
3. Press and hold AUDIO button again to disconnect.
HOW TO USE BLUETOOTH IN YOUR CAR AUDIO

15
SPECIFICATIONS
CD/MP3 PLAYER
Signal to Noise Ratio > 60dB
Channel Separation > 45 dB
Frequency Response 20Hz - 20 kHz
RADIO
FM Section:
Frequency range 87.5-108 MHz
Intermediate frequency 10.7 MHz
Sensitivity 3 µV
Stereo separation 30 dB
Signal to noise ratio 50 dB
Channel step 50 kHz
AM Section:
Frequency range 522-1620 KHz
Intermediate frequency 450 KHz
Usable Sensitivity 32 dBµV
LINE-OUT
Output 5 V (max.)
Impedance 10k Ohm
GENERAL
Power Supply 12V DC (10.8-15.6V allowable)
Speaker impedance 4 or 8 ohm
Maximum output power 80 watts x 4 channels