PSC1502 AUDIO SYSTEMS
INSTALLATION GUIDE
HAWG WIRED
PAGE 10
NEWARK, CA
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CONTROLS DEFINED
INPUT GAIN ADJUSTMENT:
A COMMON MISCONCEPTION ABOUT GAIN ADJUSTMENT ON AMPLIFIERS IS THAT “MORE GAIN =
MORE VOLUME”. ACTUALLY, IT’S NOT THE VOLUME THAT’S BEING INCREASED, BUT RATHER THE
AMPLIFIER’S SENSITIVITY TO THE SOURCE INPUT. BY INCREASING THE GAIN LEVEL, YOU’RE
INCREASING HOW SENSITIVE THE AMPLIFIER IS TO THE SIGNAL IT RECEIVES FROM THE SOURCE
UNIT. THIS IS WHY IT’S IMPORTANT TO SET THE GAIN PROPERLY, RATHER THAN SIMPLY TURNING
THE KNOB UNTIL IT’S REALLY LOUD.
GAIN ALLOWS THE FOLLOWING NOMINAL OPERATING LEVEL ADJUSTMENTS:
LOW LEVEL INPUT (RCA LINE-IN) - 250MV TO 2.5V
HIGH LEVEL INPUT (SPEAKER-IN) - 500MV TO 5V
THESE VOLTAGE LEVELS CAN ACCOMMODATE VIRTUALLY ANY HARLEY-DAVIDSON
®
OR OTHER BRAND
OF CAR, MARINE, OR MOTORCYCLE SOURCE UNITS, AS WELL AS JUST ABOUT ANYTHING THAT HAS
RCA OR LINE-OUT STYLE OUTPUTS.
WARNING: SETTING THE GAIN TOO HIGH IN AN ATTEMPT TO GET “MORE VOLUME” CAN NOT ONLY CAUSE PREMATURE
DISTORTION, BUT CAN ALSO DAMAGE YOUR SPEAKERS. IF YOUR SYSTEM CONFIGURATION RESULTS IN YOUR GAIN
CONTROL BEING SET OUTSIDE THE TYPICAL RANGE AS INDICATED ABOVE, CALL US TO RESOLVE THE PROBLEM.
CROSSOVER MODE SWITCH:
THIS SWITCH SELECTS WHICH RANGE OF FREQUENCIES THAT THE BUILT-IN CROSSOVER WILL
FILTER. EACH MODE IS EQUIPPED WITH 12DB PER OCTAVE ELECTRONIC FILTERS FOR PRECISE
FREQUENCY ATTENUATION WITH MINIMAL PHASE DISTORTION. THE OPTIONS ARE AS FOLLOWS:
LOW – LOW-PASS – USED WHEN SPEAKER OUTPUTS WILL DRIVE SUBWOOFERS, OR LOW
RANGE SPEAKERS ONLY.
HIGH – HIGH-PASS (DEFAULT) – USED WHEN SPEAKER OUTPUTS WILL DRIVE MIDDLE TO
HIGH RANGE SPEAKERS ONLY (RECOMMENDED SETTING FOR ALL 5.25” SPEAKERS).
FULL – FULL-RANGE – USED WHEN SPEAKER OUTPUTS WILL DRIVE FULL RANGE
SPEAKERS ONLY. THIS BY-PASSES AND DISABLES THE CROSSOVER CIRCUIT.
NOTE: CHANGING THE CROSSOVER FILTER CONTROL WILL PRODUCE NO EFFECT IN THIS MODE.
