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6. Input Gain Adjustment
Before operating the GTS300 or
GTS600, recheck all wiring
connections to make sure they are
correct and secure. Be sure that a
fuse (40 amp for GTS300 and two
40 amp fuses for the GTS600, not
included) is installed in the +12V
line near the battery. Reconnect the
negative ground (-) terminal of the
battery. Make sure that the input
mode selector, speaker output
crossover frequency modules, and
preamp output crossover switch
are properly set.
Adjusting the Gain
• The setting of the gain control on
the GTS300 and GTS600 is
important to ensure proper
performance, low noise levels,
and maximum reliability in the
system.
Using a high signal level from
the source and a low gain setting
on the amplifier will help keep
backgroune noise levels in the
system low.
• To adjust a system using a single
amplifier, start with the amplifier
gain controls fully
counterclockwise.
Set all Bass/Treble or equalizer
controls to their centered or
bypassed positions. While
listening carefully to the system
output, adjust the volume control
of the radio/tape deck to the point
where you first begin to hear
audible distortion. Reduce the
level just to the point where the
distortion goes away.
If this setting does not provide
adequate volume levels, gradually
increase (turn clockwise) the gain
control on the GTS300 ot GTS600
until the system plays as loud as
necessary ot when the first signs of
distortion are heard.
BEST-Vertical Mounting
GOOD-Horizontal Mounting
NEVER-Mount Upside Down
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