6. REAR INPUT (High Level)
This terminal block allows for a high level speaker left and right rear channel signal input from the source
unit.
7. FRONT GAIN Control
This control matches the input level of your ALC-4 with the front output level of your source unit.
8. REAR GAIN Control
This control matches the input level of your ALC-4 with the rear output level of your source unit.
9. CLIP Indicator
This LED indicates when the signal is at its maximum level before distortion occurs. When the input GAIN
adjustment is set correctly and the source unit is at is maximum volume this LED should flicker orange
intermittently.
10. POWER Indicator
This LED glows blue when the ALC-4 is powered on.
11. REM OUT / REM IN / BATT+ / GND Power Terminal
These connections are for remote turn-on, input power and chassis ground. Use a minimum of 18-gauge
wire for the power (BATT+) and ground (GND) connections. The power (BATT+) should be fused with a
1-amp fuse.
INSTALLATION EXPERIENCE
Installation of PowerBass mobile sound equipment requires detailed knowledge of electronics wiring and
proper speaker impedance. We strongly recommend installation by an authorized PowerBass dealer. This
Owner’s Manual only provides general installation and operation instructions. If you have any reservations
about your installation skills, please contact your local PowerBass dealer for assistance.
PREPARING FOR INSTALLATION
NOTE: The tools listed below may be required for basic installation
•
An electric drill with bits
•
Philips head and standard screwdrivers
•
Wire strippers
•
Crimping tool
•
VOM (electronic volt ohm meter)
•
Heat shrink tubing and heat gun
•
Soldering iron
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