Set Levels To Establish A Baseline - Datasat AP25 Installation And Operating Manual

2.10.1 Set levels to establish a baseline

In the auditorium, confirm that all amplifiers are ON, mute is OFF, and masking and
curtains are opened.
Use a high-quality, calibrated SPL meter in the auditorium.
Menu (System) > Formats > Audio Levels
Set the Fader to 7.0. This is the standard reference level.
Run Pink Noise on each channel, one by one.
First, by adjusting the amplifiers, try to achieve the baseline levels. Set the SPL levels
according to the chart below.
Note that SPL readings should be measured un-weighted, or C-weighted, with the
meter set to slow.
Use an RTA to calibrate the proper level setting of the subwoofer.
Table 10: SPL levels
* Subwoofer should be set to 10 dB of in-band gain
(see SMPTE RP-200), which equates to approximately 91 dBC (slow).
If not possible to achieve the baseline, use the AP25 (Analog Output Levels) to make
minor adjustments.
AP25 Installation & Operating Guide
AP25 Installation and Operating Guide
Channel Description
1 Left
2 Right
3 Center
4 Sub bass
5 Left Surround
6 Right Surround
7 Back Surround
8 Left Center
9 Right Center
SPL
85 dB
85 dB
85 dB
91 dB*
82 dB
82 dB
82 dB
85 dB
85 dB
Document # 9301H79500 Ver. 1.00
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