Infinity Powered Subwoofer Basslink II None - Manual (Page 7)

6
BassLink II provides several controls and indica-
tors that simplify sonic integration with virtually
any vehicle’s unique acoustic properties. They are
located on the front and side panels, as shown in
Figures 14 and 15.
Figure 14. BassLink II controls on the front panel.
POWER LED:This indicator will glow blue when
BassLink II is operational.
GAIN Control: Use this control to adjust the rela-
tive volume (loudness) of BassLink II with respect
to the other speakers in the vehicle.
CROSSOVER: Use this control to adjust the
amount of high-frequency information present in
BassLink II’s output. A lower value means more of
the high frequencies are filtered out.
BASS BOOST: Use this control to correct any
perceived peak or dip in the bass response
(typically around 40Hz in most vehicles). Set the
control to any value between –6dB and +3dB,
according to what sounds best.
Figure 15. BassLink II controls on right-side panel.
PHASE Control: Use this switch to reverse the
phase of BassLink II’s output with respect to
its input. Choose the position (0° or 180°) that
sounds the best.
Note: Depending on BassLink II’s orientation and
location in a vehicle, reversing the phase may,
or may not, increase or decrease the amount
of upper bass being reproduced.
AUTO TURN ON: For speaker-level connections,
use this switch to activate (or deactivate) BassLink
II’s automatic turn-on circuit. For most speaker-level
applications, slide the switch to AUTO. However, if
your system produces false turn-on signals or uses
a remote (REM) connection, slide the switch to OFF.
REMOTE LEVEL Control: Use this RJ11 jack to
connect the REMOTE LEVEL control (see page 7).
SERVO LED: This indicator glows blue when the
subwoofer is at maximum excursion and the
amplifier is modifying the output to maintain
maximum performance. Be sure to monitor this
indicator during BassLink II setup (see Tuning
BassLink II). When 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.
C
ONTROLS AND
F
UNCTIONS
1. Unplug the RJ11 cable that connects the
REMOTE LEVEL control to BassLink II.
2. Make sure the head unit is off and its volume
control is set to minimum.
3. On BassLink II’s front panel, initially set
all controls to their midpoint positions, as
shown in Figure 14. On BassLink II’s side
panel, initially set PHASE to 0°, as shown
in Figure 15.
4. Turn on the head unit and play a favorite
music track that has substantial bass. Set the
head unit’s volume control to 75 percent of
the total output (approximately 3 o’clock on
rotary controls).
5. Adjust the GAIN control clockwise until the
SERVO LED (on BassLink II’s side panel)
begins to flash with each bass note but
doesn’t stay lit continuously.
6. Listen to your system, making a mental
note of the amount of upper bass being
reproduced.
7. Switch the PHASE control to 180° and listen
again for upper bass content. There may be
more upper bass, less upper bass, or no
change at all. The position that provides the
most upper bass is correct, but choose either
setting according to your taste.
8. Adjust the CROSSOVER control clockwise
or counterclockwise until you hear only low-
frequency information. For example, you
should NOT hear any vocals coming from
BassLink II when seated in the normal listen-
ing position.
9. Adjust the BASS BOOST control clockwise or
counterclockwise to suit your taste.
10. Recheck the SERVO LED to make sure it’s
flashing in time with the bass but is not lit
continuously. If it is lit continuously, adjust
the GAIN control counterclockwise until the
SERVO LED only flashes in time with the bass.
11. Reconnect the RJ11 cable between the
REMOTE LEVEL control and BassLink II. You
may then use the REMOTE LEVEL control to
adjust the level of the bass to suit your taste
and/or different program material.
Note: In most cases, the above steps will provide
satisfactory tuning. However, the actual process
may require several readjustments of each control,
since the settings will interact with each other.
If necessary, consult your authorized Infinity
car audio dealer for help in tuning your system.
T
UNING
B
ASS
L
INK
II
Powered Subwoofer Basslink II
6