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Crestron C2N-DAP8RC Digital Audio Processor with Room Control
Operations Guide – DOC. 8187A Digital Audio Processor with Room Control: C2N-DAP8RC • 43
Click on the appropriate buttons to identify the existing speaker arrangement. Note
that the front and the surround speakers are treated as pairs. Select the appropriate
one of the X-OVER buttons to specify the crossover frequency for the subwoofer (if
present). The distinction between large and small speakers here is their ability to
provide effective sound in the low frequency range (120 Hz and below), not their
physical size. Speakers designated as large will receive low frequency signals. Low
frequency signals appearing in channels with speakers designated as small will be
filtered out and routed to the subwoofer. Check the frequency range rating of all
speakers to determine their proper setting.
Audio Configuration
Select the AUDIO CONFIG button. The screen displays the AUDIO CONFIG
window. Use this screen to set up the volume trims, the delays, and the noise
generator settings. These settings are used together during room calibration.
AUDIO CONFIG Window
Use the VOLUME TRIMS settings to specify the relative gain for each speaker in
the room. Settings range from –12 dB to 12 dB in 0.5 dB increments.
Use the DELAY X 1ms settings to specify the delays needed to ensure that the sound
from all speakers reach the listener’s ears at exactly the same time. Enter the delays,
from 0 to 15 milliseconds, for each speaker by using a Real Time Analyzer (RTA)
equipped to give a millisecond value from the time the sound was produced to the
time it reaches the listener’s position. One example of such a device is the Audio
Controls Iasys RTA.
Use the NOISE GENERATOR buttons to select the noise source. The default STD
(Dolby) button toggles to PINK. Press BYPASS to bypass all equalization filters
and volume/tone controls. Use the ON and MUTE buttons to turn each speaker on
and off.