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Digital Audio Tools
Delays
Use this tab to enter the distance or timing of the speakers to the primary listening position. This is important
so that the sound arrives at the listener's ears at the proper time in reference to the material and the other
speakers in the system. (The seat that will be used the most is considered the primary listening position.)
Feet: Using a tape measure, measure the distance from the front of each speaker to the
primary seat in the theater. Enter the measured distance in each box for its respective speaker.
Meters: Using a tape measure, measure the distance from the front of each speaker to the
primary seat in the theater. Enter the measured distance in each box for its respective speaker.
Milliseconds: Enter the amount of time for the sound from each speaker to reach the primary
seat in the theater. There are analyzers equipped to give a millisecond value from the time the
sound was produced to the time it reaches the listener's position.
NOTE: Delays are not taken into effect in Realtime Mode until they are sent to the processor using the Send
button.
NOTE: When you retrieve delay values from a processor, the information is accurately displayed in
milliseconds.
NOTE: It is recommended to use distance (feet/meters) calculations for ease of use and a lower chance of
error.
Room Calibration
Use this tab to adjust each speaker to the same reference volume level. Use an SPL meter placed at the
primary listening location to measure the output of each speaker, using Dolby Noise as your reference. Make
sure you are in Realtime Mode for proper adjustment; use Source/Noise Steering to turn on the
Noise/External Source, and select the speaker you wish to use as the reference speaker. A level of 75 dB for
each speaker is desired.
Master Volume: Use this control to set only the "reference" speaker to 75 dB.
Available Speakers: The setting for all available speakers in the project starts at zero and has
a usable trim adjustment of –12 dB to 12 dB. After setting the "reference" speaker level, use
Source/Noise Steering to select each other speaker, in turn, and use the trim controls, not the
Master Volume, to achieve the proper 75 dB level.
LFE: This trim adjustment is for the Low Frequency Effects channel. The usable adjustment
is 0 to –10 dB, and attenuates the LFE portion of the signal while leaving the bass
information from the other channels at their original levels. Adjust this setting to suit your
personal preference and the requirements of your equipment.
NOTE: The zero button to the left of the Front Left trim control resets all speaker trim controls and the LFE
trim control to 0.00 dB; the Master Volume setting is not affected.
Input Settings
Use this tab to select the type of incoming signal and the decoding type for each source. Any analog input
also has an adjustment available for its input level; digital inputs have no adjustment. If so desired, setup of
the source and the decoding type for each signal can be left at their default settings and the user will not have
to make any selections.
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• Digital Audio Processors: C2N-DAP8/RC
Crestron DAT Software
Quick Start – DOC. 6238
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