Infinity BassLink User manual

Models:
BassLink
BassLink (Remote Level Control Ready)
BassLink X
Powered Automotive Subwoofer
SERVICE MANUAL
Infinity Systems, Inc.
250 Crossways Park Dr.
Woodbury, New York 11797
Rev27/2003

Contents
ALL MODELS BASSLINK
SPECIFICATIONS …………………………………………..……………2
CONNECTIONS/APPLICATIONS ………………………………………3
TUNING BASSLINK…………………………………………………….…6
TROUBLESHOOTING ……………………………………………………7
TEST SETUP PROCEDURE ……………..………..……………………8
BASSLINK (Original version without Remote Level Control jack)
SERVICE BULLETIN INF2000-03 ………………………………………10
EXPLODED VIEW …………………………………………….…..………11
MECHANICAL PARTS LIST ……………….………………………….…12
BLOCK DIAGRAM …………..……………..………….………………….13
PCB DRAWINGS …………………………….……………………………14
ELECTRICAL PARTS LIST ………………………………………………24
SCHEMATICS …………………………………………………………..…29
PACKAGING …………………………………………………………….…31
BASSLINK or BASSLINK X (Versions with Remote Level Control jack)
SERVICE BULLETIN INF2003-01 ………………………………………33
EXPLODED VIEW ………………………….…………………..…………34
MECHANICAL PARTS LIST …………….….……………………………35
BLOCK DIAGRAM ………………………..………….…………………...36
PCB DRAWINGS …………………………….……………………………37
ELECTRICAL PARTS LIST ………………………………………………44
SCHEMATICS …………………………………………………………..…50
PACKAGING …………………………………………………………….…54
ALL MODELS BASSLINK
INTEGRATED CIRCUIT DIAGRAMS ………………………..…………55

Basslink/Basslink X
Specifications
BASSLINK/BASSLINK w/ Remote Level Control/BASSLINK X
Amplifier Power: 200W RMS @10% THD
120W RMS @1% THD
Frequency Response: 20Hz – 120Hz
THD @ 30W 1.0%
Input Sensitivity: 50mV – 4V Line-Level Input
1V – 16V Universal Interface
Maximum Input Sensitivity 7mV Line-Level Input
(Gain level @ Max) 120mV Universal Interface
Crossover Frequency: 50Hz – 120Hz
Crossover Slope: 12dB/octave
Bass Boost: –6 to +3 dB @ 40Hz
Signal-Noise Ratio 65dB (Wide band w/ 22K LPF)
Max Gain Level Noise 3.0 mV Basslink
(Level pot Max.) 1.8 mV Basslink w/ Remote Level Control
1.8 mV Basslink X
Max Gain Level Noise 2.0 mV Basslink
(Level pot Min.) 1.7 mV Basslink w/ Remote Level Control
1.7 mV Basslink X
Auto On/Off Time From 1 1/2 to 5 min.
(depending on last input signal level)
Gain boost (min to max) 9.0 dB
Fuse: 25A Basslink
20A Basslink w/ Remote Level Control
20A Basslink X
Maximum Current Draw: 12A
Quiescent Current Draw: <800 mA
Protection Circuits:
Over/Under voltage 17.5, 8.5 VDC
Temperature 95°C
Short Circuit w/ 0.1 Wresistor
DC Offset Yes
Dimensions: 14-1/2" x 12-1/2" x 8-1/2" (L x W x H)
(369mm x 318mm x 216mm)
Weight 16 lbs./7.2kg
Infinity continually strives to update and improve existing products, as well as create new ones. The specifications and
construction details in this and related Infinity publications are therefore subject to change without notice.

3
Connect power to BassLink, as shown in Figure 5.
Also observe these installation tips:
•Use at least #12 AWG wire for the +BATT
(+12 Vdc) and GND (ground) connections. If
needed, use at least a #20 AWG wire for the
REM (remote) connection.
•Route all power wires through a grommet in
the vehicle’s firewall. If a factory grommet is
unavailable, install one.
•Connect a short GND wire from BassLink to the
nearest bare metal surface. For a good connec-
tion, scrape away paint from the metal surface
and use a screw with a lock (star) washer.
Figure 5. Power connections for BassLink.
•Install a fuse holder with a 20 A fuse within 18"
of the battery + terminal (see Figure 5).
•The REM connection requires +5 to +12 Vdc
signal for BassLink to turn on remotely. Most
head units with preamp outputs provide this
remote voltage signal. For speaker-level appli-
cations, a remote connection is not required,
since BassLink’s AutoTurn-On feature will
sense voltage on the speaker wires to
automatically turn on BassLink.
IMPORTANT:To enable BassLink’s Auto
Turn-On feature, set AUTOTURN-ON to the
AUTO position (see Figure 12 on page 6).
POWER CONNECTIONS
BassLink is equipped with four line-level (RCA)
inputs and four speaker-level inputs. Any combina-
tion of line-level and speaker-level inputs may be
used to provide nonfading bass when connected to
a head unit with four outputs.
Figure 6. BassLink audio connections for a head
unit with two line-level or subwoofer (RCA) outputs.
To help you plan your installation, we included
five system applications in Figures 6 through 10
on pages 3 through 5. For more system ideas, see
your authorized Infinity car-audio dealer.
Note:The applications show the optional remote
SUB LEVEL control which installs under the dash-
board for easy in-car bass level adjustments.
APPLICATIONS
R
L
+BATT
REM
GND
POWER
FUSE20A
PHASE
REMOTE
GAIN
CONTROL
SERVO
UNIVERSAL
INTERFACE
REAR
FRONT
FRONT REAR
ÐRIGHT +
ÐLEFT +
ÐRIGHT +
ÐLEFT +
0¡
180¡
OFF
AUTO
AUTO
TURN ON
Chassis Ground
(Bare Metal)
BassLink
(right side panel)
Remote
Turn-On
Fuse 20 A Source Unit
18"
Battery
R
L
+BATT
REM
GND
POWER
FUSE20A
PHASE
REMOTE
GAIN
CONTROL
SERVO
UNIVERSAL
INTERFACE
REAR
FRONT
FRONT REAR
ÐRIGHT+
ÐLEFT +
ÐRIGHT+
ÐLEFT +
0 ¡
180 ¡
OFF
AUTO
AUTO
TURNON
R
L
PHASE
REMOTE
GAIN
CONTROL
UNIVERSAL
INTERFACE
REAR
FRONT
FRONT
REAR
ÐRIGHT +
ÐLEFT +
ÐRIGHT +
ÐLEFT +
0 ¡
180 ¡
OFF
AUTO
AUTO
TURN ON
LF Speaker
+–
RF Speaker
LR Speaker
Subwoofer or
Line-Level
Outputs
(on Source Unit) Sub Level
Control
(optional)
RL
RR Speaker
+–
+–+– Source Unit
BassLink
(right side)
Sub Level Control
(optional)
+–
RCA Stereo Cables
(not supplied)
Note: For the original version Basslink without the AUTO OFF/ON switch and Optional Sub
Level Control, references to these items in the Connections, Applications and Controls sections
can be ignored - all other information is valid.

4
Figure 7. BassLink audio connections for a head
unit equipped with four line-level (RCA) outputs.
APPLICATIONS (CONTINUED)
Figure 8. BassLink audio connections for a head
unit equipped with two line-level (RCA) outputs
and two speaker-level outputs.
R
L
+BATT
REM
GND
POWER
FUSE20A
PHASE
REMOTE
GAIN
CONTROL
SERVO
UNIVERSAL
INTERFACE
REAR
FRONT
FRONT REAR
ÐRIGHT+
ÐLEFT +
ÐRIGHT+
ÐLEFT +
0 ¡
180 ¡
OFF
AUTO
AUTO
TURNON
R
L
PHASE
REMOTE
GAIN
CONTROL
UNIVERSAL
INTERFACE
REAR
FRONT
FRONT
REAR
ÐRIGHT +
ÐLEFT +
ÐRIGHT +
ÐLEFT +
0 ¡
180 ¡
OFF
AUTO
AUTO
TURN ON
LF Speaker
+–
RF Speaker
LR Speaker
Line-Level Outputs
(on Source Unit)
Sub Level
Control
(optional)
RFLRRR LF
RR Speaker
+–
+–+–Source Unit
BassLink
(right side)
Sub Level Control
(optional)
+–
RCA Stereo Cables
(not supplied)
R
L
+BATT
REM
GND
POWER
FUSE20A
PHASE
REMOTE
GAIN
CONTROL
SERVO
UNIVERSAL
INTERFACE
REAR
FRONT
FRONT REAR
ÐRIGHT+
ÐLEFT +
ÐRIGHT+
ÐLEFT +
0 ¡
180 ¡
OFF
AUTO
AUTO
TURNON
R
L
PHASE
REMOTE
GAIN
CONTROL
UNIVERSAL
INTERFACE
REAR
FRONT
FRONT
REAR
ÐRIGHT +
ÐLEFT +
ÐRIGHT +
ÐLEFT +
0 ¡
180 ¡
OFF
AUTO
AUTO
TURN ON
LF Speaker
+–
RF Speaker
LR Speaker
Line-Level
Outputs
(on Source Unit) Sub Level
Control
(optional)
RF LF
Speaker Wires
(spliced)
RR LR
RR Speaker
+–
+–+–Source Unit
BassLink
(right side)
Sub Level Control
(optional)
VIOLET GREEN/BLACK
VIOLET/BLACK GREEN
+–
RCA Stereo Cables
(not supplied)
Splices
(not supplied) Splices (not supplied)