Power Amplifier Adjustments And Tuning - Eclipse EA4000 Owner's Manual

Power Amplifier
Adjustments and Tuning
High Pass Filter:
Stops the Low frequencies,
Bass Boost:
allows all frequencies
Increase the output
above the adjusted
of low frequencies
crossover
point to be amplified.
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Mono
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FILTER
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LJ
llOW
LJ
lOFF
Low Pass Filter:
LEVEL
I
LOW PASS HI PASS
BASS B INPUT
Stops the High frequencies,
100 70
I
Input Control:
allows all frequencies
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Adjusts the input
below the adjusted crossover
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sensitivity of the amplifier.
point to be amplified.
50 Hz 500 30 Hz 500
o
dB
8
8' V
0.2
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Adjusting and Tuning is a critical step in optimizing the performance and balance of both the Power Amps
and the Speakers in your Audio System. Careful attention to tuning will provide the best sound and a
longer life for all of the components.
1. Input Controls:
Knowing the output Voltage from the Source Unit will allow you to set the Input
Controls before physically installing the Amp in the car. If the Source Unit output Voltage Specification is
4 Volts, start by setting the gain controls to about 5 Volts before installing the Amplifier.
2. Mono Switch:
The Mono switch is in the OFF Position when the Amplifier is used in Stereo.
The Mono Switch will be in the ON Position when the Amplifier is in the Mono Mode.
3. Crossover Points:
The Crossover Points will be adjusted before installing the Amplifier.
The Crossover Frequency is selected based on the speaker size, system configuration, and the amount of
power applied to each speaker. The smaller diameter speakers will typically be crossed over at higher
frequencies than larger diameter speakers will be. Smaller diameter speakers with less power applied can
be crossed over at a lower frequency.
High Pass Filter:
The high pass filter is continuously variable between 30Hz and 500Hz, and typically
applied to front and rear Satellite Speakers.
30Hz 500Hz
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Hi
Pass Filter Selection
Low Pass Filter:
The low pass filter is continuously variable between 50Hz and 500Hz, and typically
applied to Mid Bass and Subwoofers.
50Hz 500Hz
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Lo Pass Filter Selection
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