AudioControl Epicenter 1200, Installation Manual

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Installation Manual
13. EPICENTER Controls: On/Off, Sweep, Wide
– The bass response
in a system is affected by four factors;
The acoustics of the vehicle
The location of the speakers
The music: how it was recorded AND how it is being played back
Speakers and speaker enclosures
Because of the variations in the recording process, we developed
the Epicenter to help restore any low frequencies lost during the
recording process; however, the acoustics of various environ-
ments are different. With this in mind, our engineers developed
the unique Para BASS system for the Epicenter amplifier.
The Sweep control allows you to select a center frequency (the
frequency most affected) between 27 and 63 Hz.
The Width control then allows you to control the shape of the
filter centered on the Sweep frequency.
The On/Off switch allows you to turn this bass restoration system
on or off.
In operation, once the sweep and the width have been set, the
ACR-3 remote (in blue-LED mode) is used to adjust the level of the
bass restoration.
14. PFM Subsonic 16 Hz/32 Hz
– Many car
audio systems truly push the limits of
their subwoofer without really knowing it. Tuned enclosures affect
the roll-off of many speakers, and yet lots of source material forces
the speakers to play lower than is good for them. The net result is
wasted amplifier power and damaged speakers. The AudioControl
PFM filter is a programmable subsonic filter that allows the speak-
er to play only as low as it should be playing. Because every sys-
tem is different, we allow you to select the PFM frequency (either
32 Hz or 16 Hz). Follow the recommendations of your subwoofer
manufacturer. If in doubt, try 32 Hz and see if that will work just as
well as 16 Hz.
15. Crossover Frequency – Since component speakers (like woofers)
are designed to reproduce certain frequency ranges, a crossover
allows you to match the speaker to the appropriate frequency
range. Most manufactures list a recommended crossover frequen-
cy as part of the speaker specifications. (You did read their manual
didn’t you?) Choosing the correct crossover point will provide
increased speaker reliability and optimum sound quality. the
Epicenter amplifiers come with an adjustable-frequency 24/dB
Octave Linkwitz-Riley crossover. Adjust the crossover frequency
on the Epicenter amplifier to match the value specified by your
subwoofer’s manufacturer. If you do not know this value, start out
with the crossover selector turned all the way to the left (counter
clockwise) and adjust it until you find a position that suits your
subwoofer system best.
Chapter 5: Features