7
Note: It takes lots of current to make lots of power!
Remember! An electrical circuit is just that... a complete circuit. For current to
travel, you must complete the circuit from the positive terminal to the negative
terminal (which is connected to the vehicle frame). So what ever Gauge wire
you use for power (B+) you must also use for ground (B-).
Note: A 4-gauge power wire needs 4-gauge ground wire!
Use the Wire Sizing Chart! Add up the fuse values on the amplifier(s) then
choose the proper size wire based on the distance from the car battery to the
amplifier location. Again, always use the same gauge wire for the main ground
as you do for the main power. Always make your ground as short as possible
and secure it to a clean solid surface, preferably the vehicle frame.
Mounting your ST-X SQ amplifier
Mounting your Zapco amplifier is easy. Just keep in mind a few guidelines:
• The amplifier can be mounted in any direction, on wood, metal, or carpet
• The metal chassis of the amp can be grounded or left isolated
• The amplifier requires adequate ventilation. Creating power creates heat,
and cooling requires air. Position the amplifier with sufficient surrounding
area for air supply and keep the end plates clear for future access
• Keep the amplifier out of the engine compartment or other locations
that may cause excessive heat or moisture
• Do not mount the amplifier to a subwoofer box or other place that may
have excessive vibration
Setting Gains
: Gain pots are not volume controls. Before you first turn on your
system, you should make sure all gain controls are set to minimum. Gain
controls should be used only if absolutely necessary. Turning up gain controls
causes increased noise, makes distortion more likely and reduces the dynamic
range of your system. If you head unit does not have sufficient output, you will
get much better results by investing in a line driver to provide more signal to
the amplifier.
