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Setup Tuning—Full-range Speakers (cont.)
4) Head Unit
The head unit should have all controls such as bass, treble, balance, and fader set to the flat or centered
position. The volume control should be at the minimum setting. If the head unit has any equalization or bass
management features such as boost, they should be defeated at this time. Turn head unit on, and verify
that the GREEN status LED is lit on the amplifier.
6) Input Sensitivity Control
Slowly rotate control clockwise until maximum undistorted playing level is
heard from the speakers. Listen closely for bottoming from the speakers. If
detected, rotate Input Sensitivity control counterclockwise until it is eliminated.
7) Crossover Controls
To achieve higher undistorted playing levels from the main speakers, the high-
pass crossover must be engaged. Rotate crossover control fully clockwise. The
highpass crossover point is now set at 350Hz. Rotate “Q” Control fully coun-
terclockwise. Move crossover switch to the right (ON) position.
Slowly rotate the Input Sensitivity control clockwise until maximum undistorted
playing level is heard from the speakers. Listen closely for bottoming from the
speakers. If detected, rotate the input sensitivity control counterclockwise until
it is eliminated. Slowly rotate the highpass crossover control counterclockwise
while listening for bottoming. You are lowering the crossover point, which
means that more bass signal is being sent to the speakers. If bottoming is
detected, rotate the input sensitivity control counterclockwise until it is eliminated and/or rotate the high-
pass crossover control clockwise to raise the crossover point.
5) Volume
With the chosen musical track playing, turn the head unit volume control up until the maximum level of
undistorted signal is heard from the speakers. (For most head units, this will be near the end of the volume
control range.)
WARNING! A distorted signal from the head unit sent to the amplifier can cause loudspeaker failure at high-
er listening levels!
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