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Communications Interface
The communications interface provides the communications link
between the RDAT and the EPX
unit. It accomplishes this task by
2
using RS-232 serial interface circuitry on all lines carrying data.
Furthermore, to maintain ground isolation, all data lines are optically
isolated from the EPX
's audio circuitry.
2
Global and VDISC Features
The first goal of Symmetry EPX
was to offer a great equalizer,
2
crossover and preamplifier all contained in one unit controlled by the
RDAT. With that goal achieved, the second goal was to make the unit
software driven allowing each of those components to interact with
one another.
After achieving the second goal the Rockford Fosgate design team
gave the EPX
Global and VDISC features. These features work
2
together and are very simple to operate. The global feature allows you
to save all equalizer-crossover-preamp settings to one preset. There
are four global presets. The VDISC feature, which stands for Volume
Dependent Interactive System Control, allows you to toggle between
different global presets based on the user specified volume thresh-
olds.
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