Controls & Functions; Troubleshooting; Tuning Basslink; Adjustment Sequence - Infinity BassLink User Manual

T B L
UNING ASS INK
BassLink 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.
Figure 4. Locations of controls.
Power
Gain
Min Max
Crossover
50Hz 120Hz
Bass Boost
-6 (dB) +3
Phase Control:The phase control is a switch
located on the panel with the electrical
connections (see Fig. 3). This switch will reverse
the phase of BassLink's output with respect to its
input. When installing BassLink with an existing
factory or aftermarket system, depending on
BassLink's location in the vehicle and the distance
between it and the other speakers in the car,
reversing the phase (by moving 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 better suits your taste.
Infinity Systems, Inc. • 250 Crossways Park Drive, Woodbury, NY 11797 USA
(800) 553-3332 • FAX (516) 682-3523 • www.infinitysystems.com
© 2000 Infinity Systems, Inc. • P/N:BASSLINKOM • Printed 4/00
C F
ONTROLS AND UNCTIONS
Gain Control:This control will adjust the input
sensitivity of BassLink. Use this control to adjust
the relative volume (loudness) of BassLink with
respect to the other speakers in the vehicle.
Crossover:The crossover control adjusts the
amount of high-frequency information present
in BassLink's output.
Bass Boost: BassLink's interaction with the
acoustics of your vehicle may produce a peak or
dip in BassLink's response. For the vast majority
of vehicles, these peaks or dips occur at about
40Hz — around the frequency of a low bass
guitar note. Use this control to correct that peak
or dip. Adjustment between –6dB and +3dB is
possible. Although response without any sharp
peaks or dips is technically correct, you may
choose the position that best suits your taste.
Power LED:The power LED will glow red to
indicate that BassLink is operational.
Servo LED:The Servo LED will glow green when
the servo circuit has determined that the woofer
has reached maximum excursion and power to
BassLink's woofer has been modified to provide
maximum performance. Monitor the servo LED
while you are tuning BassLink. When BassLink
is properly tuned the servo LED should light
momentarily during high-level bass transients.
Avoid adjustments that cause the LED to remain
lit for extended periods.
A S
DJUSTMENT EQUENCE
1. Start with gain control set to minimum and
the crossover control and bass control rotated
midway, to 12 o'clock.
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
servo LED flashes with each bass note but
doesn't stay lit continuously.
4. Listen to your system, making a mental note
of the amount of upper bass present in your
system.
5. Switch the phase control to 180 degrees 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, as heard at the listening
position, contains only low-frequency
information; i.e., you should NOT hear any
vocals coming from BassLink when you are
seated in the normal listening position.
7. Adjust the bass-boost control clockwise or
counterclockwise to suit your taste.
8. Recheck the servo LED to make sure it's
blinking with the bass but is not lit
continuously. If it is lit continuously, adjust the
gain control counterclockwise until it blinks.
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.
T
ROUBLESHOOTING
1. Power LED not lit: fuse blown, head unit not
functioning properly (no remote voltage),
faulty power, ground or remote connection.
2. Power LED lit but no sound output: inputs
not connected, head unit not functioning
properly (no output), head-unit fader control
set incorrectly (2-channel connection only).
3. Output from BassLink sounds muddy or
distorted: input gain set too high (servo
LED lit constantly), bass boost set too high
(servo LED lit constantly), head-unit output
is distorted or blown.
4. No output from BassLink when head-unit
fader control set to front or rear (4-channel
connection): input connections improperly
wired.
S
PECIFICATIONS
Amplifier Power: 200W RMS
Frequency Response: 20Hz – 120Hz
Fuse: 25A
Maximum Current Draw: 12A
Quiescent Current Draw: <800mA
Input Sensitivity: 50mV – 4V Line-Level Input
1V – 16V Universal Interface
Crossover Frequency: 50Hz – 120Hz
Crossover Slope: 12dB/octave
Bass Boost: –6 to +3 dB @ 40Hz
Dimensions (L x W x H): 14-1/2" x 12-1/2" x 8-1/2"
(369mm x 318mm x 216mm)
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/A12/8.1994
EN 55020/12.1994
Lutz Uphoff
Harman Consumer International
France. 4/00