Harman Infinity BassLink SM User manual

EN
THANK YOU
for choosing the Infinity BassLink SM. BassLink SM 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 BassLink SM 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 BassLink SM
IMPORTANT: Disconnect the vehicle’s negative (–) battery
terminal before beginning the installation.
NOTE: If you are using only the BassLink SM’s line-level (RCA)
inputs, you must connect the remote wire from the BassLink SM
to the system’s head unit so BassLink SM 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 BassLink SM’s speaker-level inputs will sense voltage on the
speaker wires and the BassLink SM 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 BassLink SM’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 BassLink SM to the source
unit’s speaker outputs. See the
illustration for the wiring configuration.
Power
Connectors
Audio System
Head Unit
BassLink
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–
BassLink SM

TUNING BassLink SM
BassLink SM 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 BassLink
SM’s output with respect to its input. When installing BassLink
SM with an existing factory or aftermarket system, depending on
BassLink SM’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
BassLink SM. Use this control to adjust the relative volume
(loudness) of BassLink SM 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 BassLink SM’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 BassLink SM to the rest of the system’s speakers while
avoiding a “hole,” where the sounds that occur between the
BassLink SM and other speakers seem to drop out.
Bass Boost Control: BassLink SM’s interaction with the
acoustics of your vehicle may produce a peak or dip in BassLink
SM’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 BassLink SM to your system’s radio/head unit (see
Input Connections, above), set the Audio Sense switch in the
“On” position. This will allow the BassLink SM to sense voltage on
the speaker inputs and turn itself on when the rest of the audio
system turns on.
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
Input Load Switch: This switch has an effect only when you
have used the High-Level inputs to connect the BassLink SM 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 BassLink SM’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 BassLink SM, as heard at the
listening position, contains only low-frequency information;
i.e., you should NOT hear any vocals coming from BassLink
SM 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
Infinity 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 (variable) @ 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.
Infinity 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 BassLink SM 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 BassLink SM 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 BassLink SM 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
BassLink SM
Powered, 8"(200mm) car audio under seat woofer system

HARMAN International Industries, Incorporated
8500 Balboa Boulevard, Northridge, CA 91329 USA
www.infinityspeakers.com
Proprietary, shallow-profile woofer
The 8" (200mm) woofer in the BassLink SM 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 BassLink SM produces minimal heat, and it doesn’t require a lot of current
from the car’s electrical system.
Intelligent electronic design
The BassLink SM 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
BassLink SM to best integrate with the rest of your car audio system.
Line- and high-level inputs
For added installation flexibility, the BassLink SM 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 BassLink SM 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 BassLink SM is compatible with the RBC Remote Bass Controller (sold separately), which enables
you to control the level remotely.
What’s in the box:
1 powered woofer enclosure
4 mounting screws
Owner’s manual
Product specifications:
BassLink SM
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)
© 2015 HARMAN International Industries, Incorporated. All rights reserved. Infinity and CMMD are
trademarks of HARMAN International Industries, Incorporated, registered in the United States and/
or other countries. Features, specifications and appearance are subject to change without notice.
Other trademarks and trade names are those of their respective owners.
Powered, 8"(200mm) car audio under seat woofer system
BassLink SM