JBL MR-145.3 User manual

This product is sold and serviced exclusively by Prospec Electronic Inc. and must be returned
to Prospec for in and out of warranty repairs. It can not be serviced under warranty by other JBL
service centers. All products sold and serviced exclusively by Prospec Electronics Inc.
For service contact us: 3325 South Morgans Point Road Mount Pleasant SC 29466
Tel [phone] Fax [phone]
RESET BY PUSHING MODE AND BAND
TO ENSURE PROPER OPERATION,
SEE INSTRUCTION MANUAL
Operation Manual
Model No.: MR-145.3

116
Wiring
Important Notes -------------------------------------------------------------- 3
Installation -------------------------------------------------------------------- 4
Supporting the Unit ---------------------------------------------------------- 5
Identification of Control Functions ---------------------------------------- 6
General Controls ----------------------------------------------------------- 7-9
Operating the Radio -------------------------------------------------------- 10
Operating the CD Player ---------------------------------------------- 11-12
Operating the USB --------------------------------------------------------- 13
AUX, RCA Description ---------------------------------------------------- 13
Precautions and Maintenance --------------------------------------------- 14
Trouble Shooting Guide -------------------- ------------------------------ 15
Specifications --------------------------------------------------------------- 16
Identification -------------------------------------------------------- 2
Contents
Specifications
Operation Voltage ------------------------------ 12 volts DC, Negative Ground
Output Power ----------------------------------- 180 watts maximum
(45wattsx4channels)
Output Impedance ------------------------------ compatible with 4 ~8 ohm speakers
Tuning Range
USAAREA ----------------------------------- FM: 87.5 ~ 107.9MHz. (200KHz step)
AM: 530 ~1710 KHz. (10KHz step)
Sensitivity --------------------------------------- AM: 35 dBu
FM: 10 dBu
FM Stereo Separation -------------------------- 30 dB
CD/USB Frequency Response ----------------- 20 ~20,000 Hz
CD/USB S/N Ratio ----------------------------- 63 dB
CD/USB Channel Separation ------------------ 50 dB
AUX Input Sensitivity ------------------------- 2V (VOLUME STEP 20)
400 and 800mV@10K ohm
EUR AREA ----------------------------------- FM: 87.5 ~ 108MHz. (50KHz step)
AM: 522 ~1620 KHz. (9KHz step)

ANT. Socket
2
Wiring Identification
Installation Notes
This radio contains four separate power amplifiers. To prevent possible damage
to these amplifiers please ensure the following:
(Applicable to both 2 and 4 speaker connection)
i) The boat chassis is not used as a loudspeaker ground(-).
ii) Front and rear loudspeaker connecting wires are not joined together.
iii) Any wires not used when completing a two speaker installation are fully insulated.
Iv) The power wire (red) is connected via the ignition switch of the boat.
12P CONNECTOR
(AUTO ANT)
()ACC
FUSE
1A
( GROUND )
FUSE
BLUE
RED
BLACK
GRAY
GRAY/BLACK
VIOLET
VIOLET/BLACK
( FRONT RIGHT )
( REAR RIGHT )
GREEN
GREEN/BLACK
WHITE
WHITE/BLACK
( FRONT LEFT )
( REAR LEFT )
RED
WHITE
10A
LINE OUT
12P CONNECTOR
(USB)
15
Trouble shooting Guide
Caution
1. CONNECTOR PINS: Always keep connector pins clean.
If the PIN connector looks dirty, use cotton tips to clean it, so as to avoid any unexpected
malfunction caused by dirt.
2. In many respects, a stereo acts much like a computer and occasionally requires a reboot.
In the unlikely event of product malfunction, a reset can usually fix the issue.
A reset is accomplished by holding the MODE and BD/LD button simultaneously
until the unit turns off.
Issue
No power
No Sound
No Reception
USB stick not
reading
Cause
1. Incorrect wiring
2. Fuse is blown
3. Low battery voltage
1. Speaker connection
came loose
2. Bad speaker
3. Output blown
4. Volume too low on
media device
1. Antenna not firmly
seated in socket
1. File must be a mp3
or wma file
Solution
1. Double check wiring
2. Replace fuse
3. Check voltage of vehicle battery
with multimeter. Voltage must
be at least 11V.
1. Double check connections.
2. Replace bad speaker with known
good speaker and connect.
3. Send unit in for repair.
4. Increase volume of media device
1. Insert firmly
1. Convert format to mp3 or wma.

14
1. Reset Function
Note:
2.General Precautions
3. Caution
A microprocessor reset function has been provided to facilitate manual resetting of the
internal microprocessor. In the unlikely event that the player fails to operate correctly
refer to step 3 below.
It will be necessary to re-enter the radio preset memories as these will have
been erased when the microprocessor was reset. After resetting the player,
ensure all functions are operating correctly.
If the unit has become extremely hot we strongly recommend that you allow it to cool down
before using. Take care of your Cd's to preserve the quality of the recordings.
Do not allow CDs to be exposed to direct sunlight. Store them in a place protected from dirt
and dust and avoid handling them with oily, greasy or wet hands.
Be sure the CD is put into the CD slot label side up.
RESET: If you are faced with a malfunction during the operation, press and hold
MODE and BD/LD button simultaneously for about 3 seconds to reset the
unit.
Precautions and Maintenance Important notes
Prior to the final installation, carry out a sound check. If high distortion or intermittent sound is
experienced, it is possible that the wiring from the CD receiver to the boat's electrical system is
poor or that the battery needs recharging.
If the battery and its charging circuit are OK, then rewire the red fused wire of the CD player
directly to the positive terminal (+) of the boat battery.
Marine accessory shops stock the connector blocks and the 10 Amp cable which may be
necessary for extending the fuse wire connection.
Make sure that the black wire on the wiring harness is connected to a good ground point on
the boat. If the chassis of the boat is used as a grounding point, make sure that the surface is
scraped clean from the metal before attaching the wire to it.
It is preferable to connect the black ground wire directly to negative terminal (-) of the boat
battery.
This model is only suitable for use in boats which have a negative ground system,
e. G. : the negative terminal of the boat battery is connected to the chassis.
Before you wire your system, disconnect your boats battery's positive (+) cable. This helps
prevent damage in case of a short. When you complete the wiring, reconnect the battery
cable and test your marine stereo. When connecting your marine stereo's black ground wire,
be sure to connect the wire to a metal part of your boat or preferably to the negative (-)
terminal of the boat battery.
1. Grounding
2. Warning: polarity...
3. Connecting the speakers and power cables
POSITIVE
CHASSIS
NEGATIVE
CHASSIS
3

Installation
4
1. Precautions
2. Mounting angle adjustment
3. Mounting example
Choose the mounting location carefully so that the unit will not interfere with the normal
driving functions of the boat.
Avoid installing the unit where it would be subject to high temperature (such as from direct
sunlight or hot air) or where it would be subject to dust, dirt or excessive vibration. Use only
the supplied mounting hardware for a safe and secure installation.
Adjust the mounting angle to less than 20 degrees from the horizontal position. Otherwise,
the unit will skip beyond its intended level.
12
4
Release Key Half Sleeve
Tap
Bend these claws, if necessary.
3
<< Installation in the cabinet >>
Note:
Installation
4.
Keep the release key in a safe place as you may need it in the future to remove
the unit from the boat.
The JBLMR145.3 must be used in conjunction with a marine radio cover thereby protecting
the faceplate from moisture. Prospec manufactures suitable covers under the accessory line
of "Seaworthy".
13
1. USB Playback
2. USB Function
Phone Charging Capability
AlloftheUSBfileplaybackfunctionissameasMP3Discfunction.
Please refer to page 11~12 on how to use possible function for USB file playback.
The USB input can be used for charging most phones. A successful charging will be
manifested by the battery indication status on the phone itself.
- With a iPhone being charged, the USB mode will not be selected.
- With a Android phone being charged, it will be detected as a USB memory first,
then display “USB CHARGE” on the unit.
With a USB stick connected, press MODE button (3) to select USB mode.
Note: The music in the USB stick must be of mp3 or wma format.
The USB drive is for USB drives only. Do not attempt to hook up any other
portable media forms as they will not be recognized.
3.
Note:
Auxiliary Input Mode
A. Press the Mode button until “AUX” appears on the LCD screen.
B. The use of auxiliary mode allows you to play the portable music device through
the headphone jack. An auxiliary adaptor will need to be purchased separately
(Prospec offers part, SEAMINI2).
RCA output
Description: The use of RCA outputs allow an amplifier or subwoofer to be connected.
!
WARNING: Do not try to play the music in your smart phone when it’s
connected via the USB jack, otherwise, the contents in your
phone memory card might be lost.
If already happened above situation, please simply restart
your smart phone.
USB Operation

1. UNIT
2. HALF SLEEVE
3. HEX NUT
4. LOCK WASHER
5. PLAIN WASHER
6. BODY
7. REAR SUPPORT STRAP
8. TAPPING SCREW
9. M5 X 20 HEX BOLT
3
5
2
1
4
6
8
HEX
Lock Washer
Plain Washer
7
Accessories subject to change without notice.
If the fuse blows, check the power connection and replace the fuse. If the fuse blows again
after the replacement, there may be an internal malfunction. In this case, consult your nearest
dealer.
Use the specified amperage fuse for each lead.
Use of a higher amperage fuse may cause serious damage.
1. Fuse replacement
2. Warning
Supporting the unit
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5. Repeat Play button (10)
6. Random play button (11)
8. SEARCHING VIA A.PS BUTTON
-S
-S
Simply push the Directory UP or Down button to select the next or previous directory.
If it does not contain directories, it would play the track at 10- file when you push DIR-
button (12), and play the track at 10+ file when you push DIR+ button (13).
imply press 3RPT, it will display “S-RPT” on the LCD and play current track repeatedly.
- Press and hold 3RPT for longer than 2s, it will display “D-RPT” on the LCD and repeatedly
play the tracks in current folder.
- Simply press it again to cancel REPEAT feature.
Function of REPEAT folder is only available for MP3/WMA playing mode.
imply press 4RDM, it will display “S-SHF” on the LCD and play the tracks in randomly.
- Press and hold 4RDM for longer than 2s, it will display “D-SHF” on the LCD and randomly
play the tracks in current folder.
- Simply press it again to cancel RANDOM feature.
Function of RANDOM folder is only available for MP3/WMA playing mode.
- If the Disc does not contain any MP3 and WMA file, this function does not operate.
While MP3/WMA disc playing, simply press A.PS button (16) once, the letter “T” will be
displayed on the LCD. Enter the desired file number by turning VOL knob (2) to your
desired track, then press SEL button (2) to confirm selection and begin to play the selected
track.
While MP3/WMA disc playing, simply press A.PS button (16) twice, an asterisk will be
displayed. Select the desired character by turning VOL knob (2) to your desired character,
then press SEL button (2) after each character is selected. Press BAND button to begin
searching for files and directories having the same character inputted.
If the selected name is a directory, “DIR” icon will appear. The user can go into a desired
directory by pressing SEL button (2). Continue to search the file name in the directory by
turning VOL knob (2). The selected file can be played by pressing the SEL button (2).
If the selected name is a file name, turning VOL knob (2) to search a desired file, then press
SEL button (2) for 2 seconds to begin playing.
While MP3/WMA playing, simply press A.PS button (16) for three times, the directory
number will be displayed on the LCD. Turn VOL knob (2) to select your desired Directory.
Then press SEL button to confirm. Continue to search sub-directory or file number as above
operation until your desired file being selected.
Note:
Note:
7. Directory Up & Down button (12, 13)
- Searching Track Directly
- Searching Directory or File Name
- Searching Directory Number
Operating the CD/MP3 Player
12

1. POWER ON/OFF button
2. Electronic function SELECT button, Volume control knob
3. MOD button ( Radio --> CDP --> USB --> AUX)
4. IEQ button ( FLAT - CLASSIC - POP - ROCK )
5. CD eject button
6. BD/LD button ( FM1, FM2, FM3, AM1, AM2) / LOUD button
7. Radio tune UP/DOWN, CD track UP/DOWN
8. Track play / pause, radio preset 1 button
9. Track intro Scan button, radio preset 2 button
10. Track repeat play button, radio preset 3 button
11. Track random play button, radio preset 4 button
12. Radio preset 5 button, Directory DOWN
13. Radio preset 6 button, Directory UP
14. MUTE button
15. SCAN button
16. A.PS - Auto Preset Scan button
17. AUX IN Hole
Identification of Control Functions
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1. Disc Operation
Notes:
2.
3. Track up and down button (7)
3. Play / pause (8)
4. Intro Scan (9)
Insert a CD label side up into the slot, the CD will begin playing automatically after it is loaded.
- NEVER insert foreign objects into the CD slot opening.
- If a CD is difficult to insert, there may already be a CD loaded in the unit or the
transit screws have not yet been removed.
- If the unit has become extremely hot, we strongly recommend that you allow it to
cool down before using.
- Take care of your CDs to preserve the quality of the recording. Do not allow them
to be exposed to direct sunlight. Store them in a place protected from dirt and dust
and avoid handling them with oily, greasy or wet hands.
With a disc inside, simply select the by pressing the in sequence.
Simply press Track up/down button (7) to select the next or previous track.
Press and hold Track up/down button (7) to go fast forward or rewind the track. At the
desired location, release the button and begin to play the track.
Push this button to Pause playback. Push it again to resume playback.
-S
CD button (3)MODE
imply press 2INT, it will display “S-SCN” on the LCD and play the first 10s of each track.
- Press and hold 2INT for longer than 2s, it will display “D-SCN” on the LCD and scan play
the tracks in current folder.
- Simply press it again to cancel SCAN feature.
Function of SCAN Folder is only available for MP3/WMA playing mode.Note:
Operating the CD/MP3 Player
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7
Controls
1. POWER ON/OFF button (1)
2. SELECT button (2)
2-1 Audio control ( VOLUME / BASS / TREBLE / BALANCE / FADER )
a. BASS Control
b. TREBLE Control
c. BALANCE Control
d. FADER Control
Simply press the Power button (1) to turn the unit on and off.
If the key or one of the
keys is not pressed within 5 seconds, the radio automatically switches into volume
control mode.
To adjust the bass tone level, first select the bass mode by pressing button (2) until BASS
appears on the display panel. Turn VOL knob (2) within 5 seconds to adjust the bass level
as desired. The bass level will be shown on the display panel from a minimum of BASS -7
to a maximum of BASS +7
To adjust the treble tone level, first select the treble mode by pressing button (2) until
TREBLE appears on the display panel. Turn VOL knob (2) within 5 seconds to adjust
the treble level as desired. The treble level will be shown on the display panel from a
minimum of TREBLE -7 to a maximum of TREBLE +7
To adjust the left-right speaker balance, first select the balance mode by pressing button
(2) until BALANCE appears on the display panel. Turn VOL knob (2) within 5 seconds
to adjust the left-rear speaker level as desired. The balance position will be shown by the
bars on the display panel from BALANCE L10 (full left) to BALANCE R10 (full right).
To adjust the front-rear speaker balance, first select the fader mode by pressing button (2)
until FADER appears on the display panel. Turn VOL knob (2) within 5 seconds to adjust
the front-rear speaker level as desired. The fader position will be shown by the bars on the
display panel from FADER F10 (full front) to FADER R10 (full rear).
Press SEL button (2) repeatedly to select the desired mode in the following order:
At each feature, turn VOL knob (2) to adjust to the desired level.
.
.
BASS --> TREBLE --> BALANCE --> FADER
10
Operating the Radio
1. Radio Operation
2. To Select Band
3. Auto / Manual tuning button (7)
4. Manual Station store
5. A.PS - Auto Store function (16)
6. SCAN function (15)
Press MODE button (3) to select Radio mode. Station frequency is indicated on display.
Press BD/LD button (6) to toggle through radio modes as follows:
FM1 --> FM2 --> FM3 --> AM1 --> AM2 --> FM1.
Simply press TUNE up/down button (7) to activate the Auto Tune mode. It will automatically
tune up or down the wave band and stop at the next station of sufficient signal strength.
Press and hold TUNE button (7) to enter manual tuning mode. It would display MANU on
the LCD, then simply press TUNE up/down button (7) to tune a station by step. The unit will
revert back to Auto Tune mode after 5 seconds without use.
Select the desired band and tune to a radio station to be memorized. Choose the preset
button memory location span 1-6 into which the station is to be stored and press and
hold that preset button for 2 seconds.
The station will now be entered into the preset memory. 6 stations can be memorized
on each of the FM1, FM2, FM3, AM1, AM2 bands.
In Radio mode, press A.PS button (16) to scan the preset stations in each band. It would
play each preset station for about 5 seconds. At the desired station press A.PS button
again to stop scanning.
Press and hold A.PS button (16) for approximately 2 seconds until you hear a beep which
confirms the memory function is engaged. The unit will SEARCH for six strong stations
and automatically store them on buttons1-6.(FM/AM only)
You can override the preset station on any button by manually setting a new frequency.
In Radio mode, press the SCAN button to scan strong stations. At desired station press the
SCAN button again to stop scanning.
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8
Controls (continued)
When the SEL button (2) is held over 2 seconds, the unit will
I-VOL is the volume level the unit will play To adjust
the I-VOL level, first select the I-VOL mode by pressing button (2) until I-VOL appears
on the display panel. Turn VOL knob (2) within 5 seconds to adjust the I-VOL level
from a minimum of I-VOL 00 to a maximum of I-VOL 45. This feature controls the max
volume level desired when powering the unit on.
To adjust the area selection, first select the area mode by pressing button (2) until REG
appears on the display panel.
To adjust the beep mode, first select the beep mode by pressing button (2) until BEEP
appears on the display panel. Turn VOL knob (2) within 5 seconds to select between
BEEP 2ND, BEEP ON, and BEEP OFF. Select BEEP 2ND when you wish to hear BEEP
sound whenever any button is pressed for more than 2 seconds. Select BEEP ON when
you wish to hear BEEP sound whenever any button is pressed. Select BEEP OFF then
no beep sound would be heard.
Simply turn the spindle knob (2) to increase or decrease volume. Current volume setting
is briefly indicated on the display panel from 00 to 45.
2-2. I-VOL, AREA, BEEP 2ND Selection
4. MODE Button(3)
Note:
5. BD/LD Button(6)
a. I-VOL (Initial Volume) Control
b. REG (Region) Control
c. BEEP Control
3. VOLUME Control (2)
enter into a submenu.
Once entered, a single press of the SEL button will result in the following functions:
when the unit is first turned on.
This unit also incorporates memory
retention. For example, if you power the boat off at volume 45 and your initial volume
setting was at 30, the unit will turn back on at 30. If however, you power the boat off at
volume 15 and your initial volume setting was at 30, the unit will turn on at 15. The unit
will always remember the lowest volume as a way of protecting your hearing.
Use the spindle knob to choose USA, EURO (Europe) ASIA,
or AUST (Australia).
Press this button to select Radio, CDP, USB and AUX.
A valid USB drive must be inserted into the USB port in order for that mode to appear.
This button works 2 functions.
a. Shortly press the BD/LD button to select the desired band F1, F2, F3, AM1, AM2.
b. In order to emphasize the bass and the treble at low volume, press and hold the BD/LD
button for about 3 seconds. The display "LOUD" is indicated on the display.
To cancel loudness function, press and hold BD/LD again.
I-VOL --> REG --> BEEP
The IEQ feature creates a realistic atmosphere for the style of music you select using the
latest digital sound technology.
Pressing this key repeatedly allows you to select from the following features :
- "FLAT" display - normal operation mode
- "CLASSICS" display - for the dramatic depth of classical music in an auditorium
- "POP" display - for the electric excitement of stadium pop
- "ROCK" display - for the subtle extension of the music's dimensions
- "DSP OFF" display - cancel the sound feature
Press MUTE button(14) to mute sound. Press it again to resume sound output.
6. IEQ button(4)
. MUTE button (14)7
9
Controls (continued)