Radio Shack Electronic Subwoofer Crossover Owner's Manual
Electronic Subwoofer Crossover
OWNER’S MANUAL — Please read before using this equipment.
Your Electronic Subwoofer Crossover is designed to give you excellent control over the
sound produced by your autosound system.
The crossover directs a selectable range of
lower audio frequencies to your subwoofer
speakers for increased bass response, and
blocks mid-range frequencies to enhance
sound clarity.
The crossover’s features include:
Two Types of Inputs
— let you use the
crossover with an autosound system that has
either line-out jacks or standard speaker outputs.
Low Pass Filter Selector
— lets you adjust
the frequency filter to 50 Hz, 90 Hz, or 180
Hz to match your subwoofer speaker system.
Input Level Controls
— let you adjust line
or speaker input levels to match your autosound system.
Bass Boost Controls
— let you boost the
selected subwoofer bass output by 12 dB.
Before you install your crossover, carefully
read all the installation instructions in this
owner’s manual.
Notes:
• Use audio patch cables with phono-type
connectors (available at your local
RadioShack store) to complete the low
level input/output connections.
• Use your autosound system’s speaker
wires to complete the high level input
connections.
• Use 18-gauge wire (available at your
local RadioShack store) to complete the
power connections.
• Turn your autosound system’s volume
all the way down before installation.
• Set the subwoofer amplifier gain (input
level) and crossover input level controls
to their midpoints.
Choosing a Mounting Location
INSTALLATION
You can easily connect this crossover. However, improper connections can damage
your crossover and other components in
your autosound system, and possibly your
vehicle’s electrical system. Before you begin,
you should know:
• which wire is the power wire in your
vehicle’s electrical system
• if your autosound system has line-level
or speaker-level outputs
Choose the mounting location for the crossover first, but do not mount it until you have
connected the wiring, adjusted the controls,
and confirmed that the crossover operates
properly with your system. By choosing the
location first, you can later mount the crossover without re-routing the wires.
Choose a mounting location that:
• is as near as possible to your autosound
system connections (It is important to
keep the audio cables as short as possible to reduce noise and interference)
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HIGH LEVEL Input Jacks
for Speaker-Level Outputs
LOW PASS
SUBWOOFER BASS
BOOST +12dB Bass
Enhancer
Power Indicator
LOW LEVEL Input
Jacks for Line-Level
Outputs
INPUT LEVEL
SUBWOOFER BASS
BOOST Bass Settings
Mounting
Hole
GND Ground Terminal
REMOTE Terminal
• does not interfere with the operation of
the vehicle
• is not directly in front of a heating vent
• allows drilling of mounting holes without
damaging other vehicle components
• allows convenient and safe routing of
wires
Connecting Input/Output
Note:
output connections (left output to left input,
and right output to right input).
Be sure to correctly match the input and
1. Disconnect the negative (–) cable from
your vehicle’s battery. This reduces the
possibility of damage to your crossover or
autosound system during installation.
Left and Right
OUTPUT Jacks
B+12V Power Terminal
Note:
After you complete the connections
and reconnect the battery cable, you
must reset all clock/memory devices in
your vehicle.
2. Connect your autosound system’s L (left)
and R (right) outputs to the crossover’s
(left) and R (right)
INPUT
jacks.This crossover has both speaker-level and line-level
inputs. Use either the
HIGH LEVEL
input terminals, but not both.
LOW LEVEL
• If your autosound system has line-
level outputs, use the two
LOW LEVEL
input jacks.
• If your autosound system does not
have line-level outputs, tap into the
wires for the existing speakers and use
the four
HIGH LEVEL
input jacks.
L
or
2
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