AudioControl Epicenter® 600 Owner's 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