AP25 Installation and Operating Guide
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AP25 Installation & Operating Guide
Document # 9301H79500 Ver. 1.00
The laptop computer uses a Virtual Network Connection (VNC) to communicate with the AP25. The
front panel touch-screen display of the AP25 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.
Note: When logging into an AP25 using a VNC device, the default password is “-“. If a
password has been set for the AP25, this password will be needed to log in.
2.9.3 Theater Equipment Check
Prior to adjusting the EQ, please check all of the components in the audio system for proper installation
and operation.
2.9.3.1
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.
Verify the high and low frequency drivers for each channel are in phase. Also, check each
channel is in phase with the others.
2.9.3.2
Amplifiers
The gain settings of all of the screen channel amplifiers and surround amplifiers should be
roughly the same. If a particular amplifier requires a vastly different gain setting or operates
differently than the others, then it should be checked and repaired.
Check all of the amplifiers for distortion or noise.
Verify that the cooling fans are operating correctly and that the air vents are clean and free
from obstructions.
2.9.3.3
Auditorium
The auditorium should have all of the acoustic treatments installed prior to setting the EQ.
Any excessive noise from air conditioners, hallways or other sources should be minimized.
All theater seats must be installed. Remove any plastic coverings from chairs or speakers
prior to any EQ (B-chain) alignment.
2.9.4 Assign Channels on AP25
After installing the AP25 into the rack and connecting the cabling for inputs and outputs, the next step is
to assign channels.
The AP25 allows for custom defined channel names for the input channels. The input channels are
named through the Channel Names screen.
Menu (System) > Formats > Channel Profile > Channel Names
In general, the default assignments must be preserved for the first 6 channels in order to maintain
compatibility with the HDMI input channel assignments, and with the Hearing Impaired output channel.
Default channel names are indicated in Table 9 below.
