Harman JBL BassPro User manual

EN
THANK YOU
for choosing the JBL BassPro. BassPro has been designed to
provide the kind of high-performance low-frequency reproduction
that used to require big, clumsy enclosures, large amplifiers, and
complex installation. To ensure maximum performance, we
strongly recommend that installation be entrusted to a qualified
professional.
WARNING
Playing loud music in an automobile can permanently damage
your hearing as well as hinder your ability to hear traffic. We
recommend using low volume levels while driving. Harman
International accepts no liability for hearing loss, bodily injury or
property damage resulting from the use or misuse of this product.
INSTALLATION
Choosing a mounting location
Choose a location that doesn’t interfere with the loading or
unloading of cargo, fold-down rear seats, or opening or closing of
the trunk lid. The best location is likely to be the front or rear
corner of the trunk or luggage compartment. These locations, in
addition to being out of the way, will provide the best sonic
reproduction in the 60Hz – 100Hz range because the output of
the woofer will be “corner loaded” against the walls of the vehicle.
In any case, the BassPro must not interfere with the safe
operation of the vehicle.
CAUTION: Make sure mounting screws will not puncture wiring
harnesses, brake or fuel lines, or the vehicle’s fuel tank. Some or
all of these may be located behind or under the mounting surface.
Mounting BassPro
IMPORTANT: Disconnect the vehicle’s negative (–) battery
terminal before beginning the installation.
NOTE: If you are using only the BassPro’s line-level (RCA) inputs,
you must connect the remote wire from the BassPro to the
system’s head unit so BassPro will turn on and off with the
system. If you will be using the speaker-level outputs from your
head unit, you do not need to connect the remote output. The
BassPro’s speaker-level inputs will sense voltage on the speaker
wires and the BassPro will turn itself on. (See Audio Sense
Switch, below.)
Input Connections
Connect the subwoofer output from the
source unit to either the left or right
line-level input. If your source unit does
not have a dedicated subwoofer output
you can connect the rear left/right
outputs to the BassPro’s left and right
inputs.
If your source unit doesn’t have
line-level outputs you can use the
included speaker-level input harness to
connect the BassPro to the source
unit’s speaker outputs. See the
illustration for the wiring configuration.
Power
Connectors
Audio System
Head Unit
BassPro
Chassis Ground
(bare metal)
18”
(46cm)
20A Fuse
Remote Turn-On (optional)
>#18AWG (0.82mm2) Wire
>#12AWG (2.05mm2) Wire
>#12AWG (2.05mm2) Wire
CONNECTIONS
Power Connections
L+ R+
L– R–
BassPro

TUNING BASSPRO
BassPro provides several controls that simplify sonic integration
with virtually any vehicle’s unique acoustic properties. Please read
the following section carefully to familiarize yourself with the
function of each control.
Phase Switch: This switch will reverse the phase of BassPro’s
output with respect to its input. When installing BassPro with an
existing factory or aftermarket system, depending on BassPro’s
location in the vehicle and the distance between it and the other
speakers in the car, changing the setting of the phase switch may
produce a discernable increase or decrease in the amount of
upper bass reproduced. Although the position that yields the
most upper bass is technically correct, you may choose the
position that best suits your taste.
Level Control: This control will adjust the input sensitivity of
BassPro. Use this control to adjust the relative volume (loudness)
of BassPro with respect to the other speakers in the vehicle.
Crossover Control: The crossover control adjusts the amount of
upper bass and midbass information present in BassPro’s output.
After listening to music on the system for a time, fine-tune the
Crossover control setting to achieve a smooth transition from the
BassPro to the rest of the system’s speakers while avoiding a
“hole,” where the sounds that occur between the BassPro and
other speakers seem to drop out.
Bass Boost Control: BassPro’s interaction with the acoustics of
your vehicle may produce a peak or dip in BassPro’s response.
For the vast majority of vehicles, these peaks or dips occur at
about 40Hz – around the frequency of the lowest bass guitar
note. Use the Bass Boost control to correct that peak or dip.
Adjustment between 0dB and +9dB is possible. Although
response without any sharp peaks or dips is technically correct,
you may choose the position that best suits your taste.
Audio Sense Switch: If you have used the High-Level inputs to
connect the BassPro to your system’s radio/head unit (see Input
Connections, above), set the Audio Sense switch in the “On”
position. This will allow the BassPro to sense voltage on the
speaker inputs and turn itself on when the rest of the audio
system turns on.
Input Load Switch: This switch has an effect only when you
Power
Connections
Fuse
(20A)
High-Level
Input
Remote
Connection
Line-
Level
Inputs
Audio
Sense
Switch
Crossover
Control
Input
Load
Switch
Level
Control
Phase
Switch
Bass
Boost
Control
have used the High-Level inputs to connect the BassPro to your
system’s radio/head unit. For the lowest noise in most
applications, set the Input Load switch in the “High” position. In
some cases, (such as when using the radio’s power fader), the
“Low” position may produce better results.
Remote Connection: This connector is compatible with the
RBC remote volume control (sold separately).
Adjustment sequence
1. Start with Level control set to minimum, the Phase switch set
to “0” and the Crossover and Bass Boost controls rotated to
the 3 o’clock position.
2. Choose program material with substantial bass content and
turn the volume control on your head unit to three-quarters of
its total output (approximately 3 o’clock on rotary controls).
3. Adjust the gain control clockwise until the BassPro’s volume
sounds balanced with the rest of the system.
4. Continue listening, making a mental note of the amount of
upper bass present in your system.
5. Switch the Phase switch to “180” and recheck for upper bass
content. There may be more upper bass, less upper bass, or
there may be no change. The position that provides the most
upper bass is correct, but you may choose either setting
according to your taste.
6. Adjust the Crossover control clockwise or counterclockwise
until the perceived output from BassPro, as heard at the
listening position, contains only low-frequency information;
i.e., you should NOT hear any vocals coming from BassPro
when you are seated in the normal listening position.
7. Adjust the Bass Boost control clockwise or counterclockwise
to suit your taste.
Note: Although this adjustment sequence will in most cases
provide satisfactory tuning, the actual process may include
several readjustments of each of the controls since their settings
will interact with each other. If necessary, consult your authorized
JBL car audio dealer for help in tuning your system.
SPECIFICATIONS
Amplifier Power : 125W RMS
Frequency Response : 35Hz – 120Hz
Fuse : 20A
Maximum Current Draw : 12A
Quiescent Current Draw : <800mA
Input Sensitivity : 0.2V – 2V Line-Level Input
2V – 20V High-Level Input
Crossover Frequency : 50Hz – 120Hz
Crossover Slope : 12dB/octave
Bass Boost : 0dB to +9dB @ 70Hz
Dimensions (W x H x D) : 13-9/16" x 9-7/8" x 2-13/16"
(344mm x 250mm x 71mm)
HARMAN International Industries, Incorporated
8500 Balboa Boulevard, Northridge, CA 91329 USA
© 2015 HARMAN International Industries, Incorporated. All rights reserved.
JBL is a trademark of HARMAN International Industries, Incorporated, registered in the
United States and/or other countries. All Rights Reserved. Features, specifications and
appearance are subject to change without notice.

Big bass from a compact powered subwoofer system.
The BassPro SL powered woofer fits under the front seat of many vehicles, and adds
powerful bass to any car audio system. An electronic crossover and flexible EQ adjustments
let you tune the BassPro SL to your system, your car’s acoustic environment and your
listening preferences. The energy-efficient digital amplifier provides a powerful engine to
drive the subwoofer while staying cool even when driven hard. The BassPro SL delivers great
bass output without taking up a lot of space.
Features
Proprietary, shallow-profile woofer
Efficient Class D amplifier
Intelligent electronic design
System Control
Line- and high-level inputs
Wired, remote level control capability
BassPro SL
Powered, 8"(200mm) car audio under seat woofer system

© 2015 HARMAN International Industries, Incorporated. All rights reserved. JBL is a trademark of
HARMAN International Industries, Incorporated, registered in the United States and/or other countries.
Features, specifications and appearance are subject to change without notice.
BassPro SL
HARMAN International Industries, Incorporated
8500 Balboa Boulevard, Northridge, CA 91329 USA
www.jbl.com
What’s in the Box
1 powered woofer enclosure
4 mounting screws
Owner’s manual
Technical Specifications
BassPro SL
Description: Powered, under seat woofer enclosure
Woofer: 8" (200mm)
Amplifier Power: 125W RMS
Frequency Response: 35Hz – 120Hz
Fuse: 20A
Maximum Current Draw: 12A
Quiescent Current Draw: <800mA
Input Sensitivity: 0.2V – 2V Line-Level Input;
2V – 20V High-Level Input
Crossover Frequency: 50Hz – 120Hz
Crossover Slope: 12dB/octave
Bass Boost: 0dB to +9dB @ 70Hz
Dimensions (L x W x H): 13-9/16" x 9-7/8" x 2-13/16"
(344mm x 250mm x 71mm)
Proprietary, shallow-profile woofer
The 8" (200mm) woofer in the BassPro SL is designed specifically to provide low
distortion, great bass performance contained in our proprietary ABS enclosure, which
has a remarkably compact footprint.
Efficient Class D amplifier
The amp that powers the BassPro SL produces minimal heat, and it doesn’t require a lot
of current from the car’s electrical system.
Intelligent electronic design
The BassPro SL employs custom circuitry to protect and provide optimum performance
at varying output levels without impacting performance or clarity.
System Control
An electronic crossover control provides variable adjustment from 50Hz – 120Hz
allowing you to dial-in BassPro SL to best integrate with the rest of your car audio system.
Line- and high-level inputs
For added installation flexibility, the BassPro SL features both line- and high-level
inputs allowing you to connect to both factory installed and aftermarket systems.
If you use the high-level inputs to connect the BassPro SL to the head unit, an input
load switch lets you switch from “Low” to “High” to achieve optimum results.
Wired, remote level control capability
The BassPro SL is compatible with the RBC Remote Bass Controller (sold separately),
which enables you to control the level remotely.
Powered, 8"(200mm) car audio under seat woofer system