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Radio Shack Electronic Subwoofer Crossover Owner's Manual page 3

Electronic subwoofer crossover

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3. Connect the autosound system speaker
wires to the crossover, carefully matching
polarity (L+ to
L+
R– to
).
R–
4. Connect the crossover's
(right)
OUTPUT
(right) inputs of the amplifier that drives
the subwoofer speakers.
Connecting Power
1. Ensure the negative (–) cable is discon-
nected from your vehicle's battery.
2. Connect the crossover's
terminal to a metal part of the vehicle's
frame.
Caution: Do not connect the ground wire
to a non-metallic (plastic) part, or to any
part insulated from the vehicle's frame by
a non-metallic part.
3. Connect the crossover's
terminal directly to the vehicle battery's
+12 volt terminal.
4. Connect
your
switched
power
orange) to the crossover's
minal. This turns the crossover on and off
when you turn your autosound system on
and off.
Note: If your autosound system does not
have a switched power lead wire, connect
the crossover's
point in your vehicle's fuse box that pro-
vides 12-volt battery power only when the
ignition is set to ON or ACC.
5. Reconnect the cable to your vehicle bat-
tery's negative (–) terminal.
Testing the Connections
Follow these steps to check your autosound
system before adjusting and mounting the
crossover.
, L– to
, R+ to
L–
R+
(left) and
L
jacks to the L (left) and R
(ground)
GND
(power)
B+12V
autosound
system's
lead
wire
(usually
REMOTE
terminal to a
REMOTE
1. Turn on your autosound system and
adjust the volume to a comfortable level.
, and
The POWER indicator lights.
2. Play a cassette tape or CD that has a
wide dynamic range, or tune to a strong
R
FM station.
Notes:
• If the sound from any speaker is distorted
or has static (or if there is no sound from
a speaker), turn off the power immedi-
ately, then check the wiring connections.
• If the system sounds with no distortion or
static, proceed to "Adjusting the Con-
trols."
ADJUSTING THE CONTROLS
Setting the Low Pass Crossover
Point
The
LOW PASS
three crossover points. All signals at or below
the selected frequency "cross over" to your
subwoofer speakers.
Slide the selector to
ter-
range of low-frequency sounds. Slide the se-
lector to
90Hz
low-frequency sounds.
Adjusting the Input Level
The input level controls let you adjust the
crossover to balance the subwoofer's sound
level with the rest of your autosound system.
Turn your autosound system up to a normal
listening level, then use a flat-head screwdriv-
er to rotate each
subwoofer is as loud as desired.
Caution: If you use the
minals and turn your autosound system vol-
ume too high for the crossover, you could
damage the crossover. To reduce this possi-
3
selector lets you set one of
to increase the
180Hz
or
to decrease the range of
50Hz
control until the
INPUT LEVEL
HIGH LEVEL
input ter-

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