A Djusting A Udio O Utput L Evels; E Quipment C Heck - Datasat AP20 Installation And Operating Manual

2.8 AP20 Configuration and Setup
This section describes procedures for AP20 audio level adjustment and sound performance
verification.
B-Chain alignment will be performed differently depending on whether the (optional) Dirac
®
Live Theater Setup application or the AP20 1/3 Octave EQ room tuning function is used. In
fact, Dirac Live
is used to tune the room and then the 1/3 Octave EQ is used afterwards to make some changes
to specific frequencies.
2.8.1 Equipment Requirements
Complete checkout and adjustment of the AP20 unit requires the following equipment (not
provided by Datasat Digital Entertainment unless otherwise noted):
 a single microphone or multiplexed microphones, connected to an RTA
 SPL meter
 Real Time Analyzer (RTA)
 Laptop computer running VNC for wireless communication with AP20
 (Optional) Datasat AP20 Dirac Live
 (Optional) Wireless router such as the Linksys WRT54GL or similar installed on AP20
Ethernet port (if connecting to laptop in auditorium). NOTE: Wired connection to the
network will work as well, if the physical connection can be made.
2.8.2 Setting and Adjusting Audio Output Levels
The AP20 Audio Processor is designed to accommodate remote operation. For this reason, we
highly recommend the use of a laptop computer for adjusting room EQ. The laptop computer
must be equipped with a wireless network card in order to take advantage of the remote
operation feature. You will also need a wireless router (not supplied by Datasat) such as the
Linksys WRT54GL or similar. This device should be connected to the Ethernet connector on
the AP20.
The laptop computer uses a Virtual Network Connection (VNC) to communicate with the
AP20. The front panel touch-screen display of the AP20 will appear on the laptop screen, but
will not function as a touch-screen. Use the laptop's cursor and arrow keys to make selections.
2.8.3 Theater Equipment Check
Prior to adjusting the EQ, please check all of the components in the audio system for proper installation
and operation.
2.8.3.1 Speakers
 Check that all speakers are properly mounted and secured. Ensure there are no loose parts
or mounting hardware left around the speakers that could be a source of noise or rattles.
 Check the aiming of all speakers. Verify there are no obstructions in front of the speakers.
For stage channels, ensure that the masking, screen frame, and sound wall do not block the
speakers.
 Speaker cables are correctly secured to the speakers and are of a suitable gauge.
 Verify each speaker has no missing or open drivers.
 Check that all speakers are connected to the correct channel.
AP20 Installation & Operating Guide
AP20 Installation and Operating Guide
®
can be used in conjunction with 1/3 Octave EQ, in a case where Dirac Live
®
configuration software
Document # 9301H39200 Ver. 1.1
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