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SBA8A
8” 600 Watts Low-Profile Active Amplified
Car Audio Subwoofer System
Suitable for Under-seat Installations
Introduction
With the SBA8A
high-powered subwoofer system to your audio system.
SBA8A features low pass crossovers, and a control for
adjusting the input sensitivity from 0.12V to 3.5V.
Both high level (speaker level) and low level (RCA type) inputs are present, making this a
universal solution for use with any head unit or other input source.
included. You can control the subwoofer level with the remote level control module.
Mounting the Subwoofer
A typical location is shown below:
3. Mark the location for mounting hole screws by positioning the cabinet where you wish to
install it. Make a small mark to identify the position and remove the unit. Thoroughly clean
the area you plan to attach the subwoofer, using a vacuum cleaner and press down on it
securely.
Control Panel and Features
1. POWER ON LED INDICATOR
2. PROTECT LED INDICATOR
3. PHASE SHIFT: Use this switch to help compensate for time alignment problems in the
from the listener than the other speakers in the system.
4. AUTO POWER ON: During ON mode, It’s not necessary to connect the remote cable if
you’re using the high level inputs. Do not function with the RCA inputs. On the contrary
while it is during AUTO POWER OFF mode that it needs remote cable connection to turn
on the unit.
5. LOW PASS FILTER:
BELOW the
frequency you set. If the rest of your system is weak on the mids, you may wish to set this
control relatively high. If the midrange is well covered by the rest of your system, you will
probably want the subwoofer to only receive lower frequency signal.
6. BASS BOOST: The bass boost feature will increase the sound level the bass frequencies.
7. INPUT GAIN CONTROL: After you have installed your system, turn this control to minimum.
Turn the head unit on (and the subwoofer will turn on via the remote connection).
Turn the head unit volume to about 2/3 full level. Slowly turn up the subwoofer input
gain control until you hear a small amount of distortion. Then reduce the level until the
distortion is completely gone. Leave the control at this setting.
8. REMOTE LEVEL CONTROL PORT: Attach the included remote level control to cotrol the
volume level of the subwoofer independently.
9. HIGH LEVEL (speaker level) INPUTS: If your head unit does not have RCA outputs, you
can use the speaker outputs for the audio source for the SBA8A. Use the supplied cable
and connect the outputs properly as sh
10. LOW LEVEL RCA INPUTS: Low level inputs are the recommended way to introduce the
audio signal to the subwoofer if RCA outputs are present on your head unit or other
signal source (such as a sound processor).
11. FUSE:
replace the fuse with a wire or coin.
12. POWER TERMINALS
own in the connection diagram in this manual.
NEVER
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Low Level Input Wiring
Low-level (RCA) input wiring is preferred for best audio performance.
Most trunk or hatchback installations will require a 15-20 foot RCA cable, while pickup trunks
and under-seat installations will require a 6-12 foot RCA cable. Always use a high quality
cable.
Power Connections
Connect the ground terminal to the closest point on the chassis of the vehicle.
Keep this ground wire to less than 39” (100 cm) inlength. Use 8 gauge (or heavier) wire.
AUTO POWER ON
the head unit using 16 gauge (or heavier) wire. Connect an empty fuse holder within 18” (45
NOTE: Do not connect BOTH the high level and low level inputs from your receiver to your
High Level Input Wiring
The high level input(s) should only be used when your receiver lacks RCA outputs.
If the RCA outputs are not present, connect the speaker outputs from the receiver to the
problems.
location. Then connect the fuse holder to the “BATT+” connection on the subwoofer rear
panel.
To REMOTE TURN-ON
terminal of head unit
Remote Level Control Connection
NOTE: Do not connect BOTH the high level and low level inputs from your receiver to your
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Instal the remote control securely under the
dash or in a similar location where using it will
not distract the driver.
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Troubleshooting
If you experience operation or performance problems with this product, compare your
installation with the electrical wiring diagram on the previous pages. If problems persist,
read the following troubleshooting tips which may help eliminate the problems.
Features:
• 8" Slim Woofer
• Low-Level RCA Input
• High-Level Speaker Line Input with
PROBLEM POSSIBLE REASON SOLUTION
NO +12v to power wire Check fuses and connections to battery.
Not switching on. Power
LED not ‘on’
Not working, but status
LED ‘on’
No sound
NO power to remote wire
Fuse broken
Fuse blown
Head Unit
Gain control not set up
Check remote on connections to head unit.
Replace fuse with correct type and amperage.
Replace fuse with correct type and amperage.
Move unit to vented area. Turn head unit down.
Check head unit volume level.
control
AUTO POWER ON/OFF selector
• Blue LED Power Status Indicator
• Red LED Protection Status Indicator
• Remote Bass Boost Level Control
• Delay Remote Turn-On Thermal
• Short and Overload Protection Circuits
What's in the Box:
•
• Remote Subwoofer Level Control
• Remote Subwoofer Control Cable
• Hi-level Input Wire
• Mounting Hardware
Technical Specs:
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Connections
Check all power, remote on and ground
connections
• Phase Shift Switch: 0 or 180°
• Adjustable Input Sensitivity: 0.12V-3.5V
• 0 to +12dB Variable Bass Boost (@50Hz)
• Low Pass Filter (50-150 Hz)
• Fuse: 1x25A
• Max Power: 600 watt
•
• THD: 14.4V
• Slim Woofer: 100Watt
• Product Dimension: 12.8" x 9.5" x 3" -inches
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