Trinnov Audio Altitude 32, User Manual

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13 CALIBRATE THE SPEAKERS IN THE
ROOM
IMPORTANT NOTE: In order to perform a proper calibration it’s important to read carefully the whole
chapters about the Essential Tools and Settings and Getting Ready for Calibration to learn about the
Altitude
32 ’s audio clock settings, audio utilities (metering tools, pink noise and solo/mute buttons) and
microphone placement recommendations.
13.1 OVERVIEW OF THE CALIBRATION
PROCEDURE
If your set of speakers has been specified correctly, the calibration process is a relatively straightforward process:
1. Adjust the master output level to have good quality measurements;
2. Start the automated calibration: the Altitude 32 will measure the acoustical response of each loudspeaker
in the room;
3. Compute the optimization filters.
4. Save one or more presets with your preferred optimization settings.
13.2 ADJUST THE MASTER OUTPUT LEVEL
To access the calibration page from the Altitude 32 ’s Main page:
Click on the Flag button in the top menu to open the Advanced Settings user interface.
Go to the Optimizer Settings/Calibration page.
The Optimizer requires a minimum Sound Pressure Level for proper calibration. Until that minimum SPL is reached, the
test signal will keep playing through the same speaker. For safety matters, we recommend to perform that first
calibration as if it were a test.
Set a safe output level:
1. Decrease Master Level to -40 dB;
2. Press the Mute button to cut the outputs (this step must ALWAYS be performed before pressing
on the Calibrate button);
3. Press the Calibrate button in the Optimizer Settings/Calibration page of the Advanced Settings
interface;
4. Follow on-screen instructions regarding the microphone: take off the cover and switch it on.
Adjust output level:
1. Increase the master level until the test signal moves on to the second speaker;
2. Use the Altitude 32 ’s metering tools in the Processor/Meters page to check the level of the
microphone inputs;
3. Use your ears to evaluate the perceived SPL of each driver and, if possible, increase the master
output level to ensure that an optimal SPL is reached for all the speakers. This will also improve
the quality of your measurements;
4. Use the Cancel button to stop the calibration (optional).