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Operation
Adjusting Gain
1. Turn amplifier gains to minimum (counter-clockwise).
2. Turn the source unit volume up to 7/8 maximum (or when distortion
is just inaudible).
3. Slowly increase amplifier gain control until adequate volume is
achieved.
NOTE: Best signal to noise and dynamic range are realized with gain set to
minimum. For a more in depth setting procedure, contact Rockford Tech-
nical Support.
Adjusting Crossover Frequency
The crossover frequency can be adjusted between 50-
500Hz. The crossover is set to LP(Low Pass) only.
Turn the crossover adjustment to minimum. With
the system playing, turn the crossover adjustment
knob up slowly until the desired crossover point is
achieved. A good place to start is 80Hz.
INFRASONIC FILTER
The 20Hz 24dB/octave infrasonic filter limits the
amount of low frequency information going to the
woofer.
NOTE: We recommend using the infrasonic filter when
using vented enclosures with this amplifier.
Variable Phase
Allows you to conveniently switch the output phase of the
amplifier between 0° and 180°. This has the same effect
as physically reversing the Positive (+) and Negative (-)
speaker wires.
10
Avoid setting amplifier gain high as noise and
distortion will greatly increase.
Punch EQ
This works along with the crossover switch on the amplifier. When set to
Low-Pass (LP) operation, this is a variable Bass Boost. Set this to your
personal preference while listening to the system.
illus.-3.1
Remote Punch Level Control
When connected, the "Gain Control" is linked and allows you to remotely
control the output level of the amplifier from the dash or center console.
illus.-4.1
illus.-5.1
Over excursion and subsequent damage may
occur at high levels of boost.
illus.-6.1
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