Aphex Studio Dominator 700 - 4 Applications; Broadcasting

4.0 APPLICATIONS
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Some common applications of limiters are:
Obtaining more loudness
Obtaining more "punch"
Preventing transmitter overmodulation
Preventing tape overload
Preventing system peak overload
Preventing overcutting
Preventing satellite uplink overmodulation
Audio P.A. system protection
Special Effects
Conventional limiters are more suited to certain of these
uses than to others. The Studio Dominator, because of its
intelligent circuitry and optional configurations, is equally
well suited to all limiter uses. This manual will address
several general categories of limiter application and show
typical setups which can serve as the basis for your particular
operation.
4.1 Broadcasting
FM broadcast processing requires special consideration
because of the pre-emphasis curve and bandwidth restrictions
involved. An option card (and a few other simple modifications)
can be installed in the Studio Dominator to produce accurate
operation for FM transmission. With this option, two operating
conditions may be chosen. First, pre-emphasis can be selected
which causes the studio Dominator to output a properly
pre-emphasized signal ready for direct feed into a non
pre-emphasized stereo generator. This is the preferred approach
in most cases. Second, accurate de-emphasis may be selected
after limiting to restore flat system response for feed to a
pre-emphasized stereo generator.
NOTE: If the stereo generator used does not include the
necessary left and right channel 15kHz overshoot compensated
lowpass filters, then the lowpass filter option should be
specified in the Studio Dominator. Many stereo generators
include lowpass filters. but they are not overshoot compensated,
which results in loss of modulation capability. In this case,
the filter should be bypassed or removed and the studio
Dominator filter used.
Setting up the limiter for FM operation is basically
similar to the general set-up procedure. A program signal is
fed into the studio Dominator and drive is adjusted to produce
at least BdB of limitng. Release time should be full fast
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