JBL BASSPRO User manual

THANK YOU
for choosing the JBL BassPro.
BassPro has been designed to deliver
great bass performance from a compact,
easily installed powered subwoofer
enclosure.
To get the best performance from your
BassPro, we strongly recommend that
installation be entrusted to a qualified
professional. Although these instructions
explain how to install BassPro in a
general sense, they do not show specific
installation methods that may be required
for your particular vehicle.
If you do not have the necessary tools
or experience, do not attempt the
installation yourself. Instead, please
ask your authorized JBL car audio
dealer about professional
installation.
In order that we may better serve
you should you require warranty
service, please retain your
original sales receipt and register your
BassPro online at www.jbl.com.

INSTALLATION
WARNING:
Playing loud music in an automobile can
hinder your ability to hear traffic and
permanently damage your hearing.
We recommend listening at low or
moderate levels while driving your car.
JBL accepts no liability for hearing loss,
bodily injury or property damage
resulting from the use or misuse of this
product.
INSTALLATION
WARNINGS AND TIPS:
• Always wear protective eyewear
when using tools.
• Disconnect the vehicle’s negative (–)
battery terminal before starting the
installation.
• Check clearances on both sides of a
planned mounting surface. Be sure
that screws or wires will not puncture
brake lines, fuel lines or wiring
harnesses, and that wire routing will
not interfere with the safe operation of
the vehicle.
• When making electrical connections,
make sure they are secure and
properly insulated.
• If BassPro’s fuse must be replaced, be
sure to use the same type of fuse and
current rating as that of the original.
CHOOSING A MOUNTING
LOCATION FOR
BASSPRO:
Choose a mounting location that doesn’t
interfere with cargo, the fold-down rear
seat or the trunk lid. The best location is
usually a corner of the trunk or cargo
area, as shown in Figures 1 and 2.
Securely mount BassPro to the
mounting surface using the four
enclosed self-tapping screws.
Choose a mounting location in the front
of the vehicle for the remote level
control.
Figure 1. Figure 2.
Figure 3. Bottom view of BassPro.
2

INSTALLING THE REMOTE CONNECTING THE SUBWOOFER
LEVEL CONTROL TO BASSPRO
The Subwoofer Level Control may be
mounted under the dash or dismantled
and mounted in the dash for a factory-
installed appearance.
UNDER-DASH MOUNTING
Select a mounting location that allows
easy access to the control while driving.
Using the Subwoofer Level Control as a
template, mark and drill holes in the
mounting surface. Attach the
Subwoofer Level Control using the
mounting screws provided (Figure 4).
IN-DASH MOUNTING
Disassemble the Subwoofer Level
Control by removing the two Phillips-
head screws on the front panel,
rear panel and on top. Remove the
Subwoofer Level Control’s bottom and
side panels. Slide the Subwoofer Level
Control’s PC board forward to release
the RJ11 connector from the back panel
and remove the board along with the
potentiometer, knob and connector as a
single assembly.
Choose a mounting location that allows
easy access to the control, and
provides 1-3/4" clearance behind the
mounting surface. Drill a 9/32" hole in
the mounting surface. Feed the
Subwoofer Level Control’s potentiome-
ter shaft (with the knob removed)
through the hole and use the nut and
washer provided to hold the control in
place (Figure 5).
Route the cable behind the dash or
other interior panels and under the
carpet. Do not route the cable outside
the vehicle. Connect the RJ11 cable
between the RJ11 receptacle on the
BassPro and the receptacle on the
Subwoofer Level Control (Figure 6).
Figure 4. Under-dash mounting of the
Subwoofer Level Control.
Figure 5. In-dash mounting of the
Subwoofer Level Control.
Figure 6. Subwoofer Level Control
electrical connection.
Knob
Hex Nut
Washer Level-
Control
Circuit
Board
Socket
for
Control
Cable
BassPro Connection Panel
Control
Cable
Rear View of
Level-Control
Circuit Board
3

POWER CONNECTIONS
Connecting power to BassPro is
shown in Figure 7. Please observe
the following installation tips:
When using the high-level input
connections, BassPro will automatically
turn on when you turn on your radio.
In this case, the remote (REM)
connection is not needed. Use at least
#20 AWG speaker wire for speaker-level
input connections.
Use at least #12 AWG wire for the
Positive Battery (BATT +12) and Ground
( ) connections. If needed, use at least
#20 AWG wire for the remote (REM)
turn-on connection.
Connect BassPro’s “BATT +12V”
terminal directly to the battery’s positive
(+) terminal. Install a fuse holder, with a
20A fuse, within 18" of the battery’s
positive (+) terminal.
Route all power wires through a
grommet in the vehicle’s firewall. If a
factory grommet is not available, install
one.
Connect a short ground wire from
BassPro’s ground terminal ( ) to the
nearest bare metal surface. For a good
connection, use sandpaper to clear
paint from the metal surface and use
a screw with a lock (star) washer.
The remote (REM) connection requires
a +5 to +12 Vdc signal for BassPro
to turn on when using the line-level
connections. Most head units with
preamp outputs provide this remote
voltage signal. As an alternative,
connect this terminal to a switched
ignition circuit.
Figure 7.
Chassis Ground
(Bare Metal)
Battery
Source Unit
Remote
Turn-On
Fuse 20A
18"
BassPro
Connection Panel
4

APPLICATIONS
BassPro is equipped with two line-level
(RCA) inputs and two high-level inputs.
To help you plan the installation of
BassPro, we have included two
system application diagrams in
Figures 8 and 9. For more installation
suggestions, contact your local
authorized JBL car audio dealer.
Figure 9. Line-level connections with
two outputs (single full range or
subwoofer).
Figure 8. High-level connections.
Connect BassPro’s high-level
inputs to either the front or rear
speaker outputs of your head unit
(splice crimps not included).
BassPro
Connection Panel
Subwoofer Level Control
BassPro
Connection Panel
Subwoofer Level Control
Left Speaker Right Speaker
Source Unit
Source Unit
LF Speaker RF Speaker
LR Speaker RR Speaker
RCA Stereo Cables
(not supplied)
Splices
(not supplied)
Splices
(not supplied)
5

CONTROLS AND FUNCTIONS
Bass Pro has controls and indicators
that help simplify sonic integration with
almost any vehicle’s unique acoustic
properties. These controls are located
on the amplifier panel, as shown in
Figure 10.
Power LED
Gain Control
Crossover
Remote Bass Control
Auto Turn-On
POWER LED: This indicator
will glow red when the BassPro is
operating.
GAIN CONTROL: Use this
control to adjust the relative volume
(loudness) of BassPro with the other
speakers in the vehicle.
CROSSOVER: Use this control to
adjust the amount of high-frequency
information present in BassPro’s output.
A lower value signifies less high-
frequency content.
3. Turn the head unit ON and play a
selection of your favorite music track
that has substantial bass.
4. Adjust the CROSSOVER control
counterclockwise, until you hear only
low-frequency information.
Example – you should not hear vocals
coming from BassPro when seated in
the normal listening position.
5. Adjust the BASS CONTROL either
clockwise or counterclockwise to suit
your taste, and to avoid audible
distortion.
6. If you elect to not install the Remote
Bass Control, adjust the GAIN
control to the maximum level that
provides undistorted output from the
BassPro, with the head unit’s volume
control at its 3 o’clock setting.
Note: In most cases the above steps
will provide you with satisfactory
results. However, the actual process
may require several readjustments of
each control, since the settings
will interact with one another. If
necessary, consult your authorized
JBL car audio dealer for help in tuning
your system.
AUTO TURN-ON: For speaker-
level connections, used this switch to
activate (or deactivate) BassPro’s
automatic turn-on circuit. For most
speaker-level applications, slide the
switch to the AUTO position. If you
prefer to use the remote (REM)
connection, slide the switch to the OFF
position.
REMOTE BASS CONTROL:
Use this RJ-11 jack to connect the
supplied remote bass control.
SETTING THE CONTROLS:
1. Make sure the head unit is off and
volume control is set to minimum.
2. On BassPro’s amplifier panel, set the
Crossover to its maximum
frequency of 120Hz, as shown in
Figure 10.
Note: If using the REMOTE BASS
CONTROL, set GAIN to maximum and
set the BASS CONTROL to the
midpoint.
6
Figure 10.

TROUBLESHOOTING
PROBLEM CAUSES AND SOLUTIONS
POWER LED not lit. 1. Fuse is blown and needs
replacement.
2. Head unit not functioning properly.
3. Check remote turn-on, power and
ground connections.
POWER LED is lit but there is no bass. 1. Inputs are not connected. Check
connections.
2. Head-unit fader controls are not set
properly. Adjust head-unit controls to
feed audio signals to BassPro.
3. Incorrect GAIN control setting.
Output sounds muddy or distorted. 1. GAIN is set too high.
2. Bass level is set too high on head
unit.
3. Head unit output is distorted or
blown. See your authorized JBL car
audio dealer.
Output gets louder when the head-unit Using speaker-level connection: one of
balance is adjusted to L or R. the speaker connections is reversed
(+/–). Reverse one channel.
POWER LED remains ON after system Speaker-level connections have a five-
is turned off. minute turn-off delay. Check the unit at
a later time.
7

Amplifier power: 100 Watts
Frequency response: 20Hz – 120Hz
Fuse rating: 20A
Max current draw: 12A
Idle current draw: <800mA
Input sensitivity: 50mV to 4V Line-level input;
1V to 16V universal interface
Crossover frequency: 70Hz – 120Hz
Crossover slope: 12dB
Dimensions (L x W x H): 16-1/8" x 9-1/2" x 12-1/4"
(includes mounting feet) (410mm x 242mmx 312mm)
SPECIFICATIONS
Declaration of Conformity
We, Harman Consumer International
2, route de Tours
72500 Chateau-du-Loir
FRANCE
declare in own responsibility, that the product
described in this owner’s manual is in compliance
with technical standards:
EN 55013/A14:1999
EN 55020/A14:1999
Emmanuel Millot
Harman Consumer
International
Chateau-du-Loir, France 3/03
JBL Consumer Products
250 Crossways Park Drive, Woodbury, NY 11797 USA
1.800.336.4JBL (4525) • FAX [phone] • www.jbl.com
© 2003 Harman International Industries, Incorporated
JBL is a registered trademark of
Harman International Industries, Incorporated.
Part No. BASSPROOM3/03