Crestron electronic C2N-DAP8RC - Manual (Page 30)

Digital Audio Processor with Room Control Crestron C2N-DAP8RC
26 • Digital Audio Processor with Room Control: C2N-DAP8RC Operations Guide - DOC. 8187A
Surround Sound System Setup
After completing the hardware hookup procedures, perform these procedures to set
the C2N-DAP8RC surround sound default values according to the actual
environment of the listening area.
Crestron recommends the use of its Digital Audio Tools program (DAT) to configure
the surround sound system because of the program’s simplicity, speed, and ease of
operation. However, Crestron also supplies an Example Program with the C2N-
DAP8RC that can demonstrate the various features of the unit and serve as a model
program for those individuals who wish to do the system setup and room balancing
functions via a touchpanel.
NOTE: Crestron recommends setting the analog parameters of the C2N-
DAP8RC in only one way—either through the DAT software or through the
SIMPL Windows program. However, if you must allow both, please read and
understand this warning. There are some subtleties that must be handled in a way
that is a bit different from what you may be familiar with when using similar
devices. For example, if you intend to directly set the C2N-DAP8RC <Volume>
analog input in your program, keep in mind that the <Volume_FB> signal can be set
to a different value through some other method (e.g., using the DAT software). In
other words, the C2N-DAP8RC actually stores these parameters, as opposed to a
CNXVTC-3 or ST-VC, where the value is stored solely in the control system. If you
were to just use an Analog RAMP symbol and send the output of the RAMP to the
<Volume> input and jam it with the <Volume_FB> output of the C2N-DAP8RC,
Oscillations might result between the RAMP and the actual <Volume_FB> value
from the C2N-DAP8RC. This could cause damaging volume levels to be sent to
your speakers.
Instead, use the "Analog Increment with Optional Feedback" (AINC) symbol.
Connect the <aout> output of the AINC to the <Volume> input of the C2N-
DAP8RC, then connect the <Volume_FB> output of the C2N-DAP8RC to the
<[FbckSignal]> input of the AINC. This way, the program will always be updated
with the true value of the C2N-DAP8RC. The same applies to any analog value that
can be changed from two places (EQ, Trim, etc.).
Test Equipment
No matter which method is used to set up the surround sound system in the listening
area, the following items are required:
• SPL (Sound Pressure Level) Meter. Used to measure sound in decibels
(dB). This is used to calibrate the speakers so each produces the same sound
level at a given volume setting.
• Tape Measure. Used to measure distance from speakers to main listening
position.
The following equipment is recommended to optimize the performance of the C2N-
DAP8RC relative to the listening area, speaker arrangement, and the user’s
preferences:
• Audio Spectrum Analyzer. Used to “see” a speaker’s frequency response in
a room. This is used with equalizers to adjust for a proper room response.
Example Program