Trinnov Audio Altitude16, User Manual

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Altitude
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10.4.3 _ADJUST THE MASTER OUTPUT LEVEL
The Altitude
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requires a minimum Sound Pressure Level for proper calibration of the active
crossovers. Until that minimum SPL is reached, the test signal will keep playing through
the same driver. For safety matters, we recommend performing that first calibration as if it
were a test.
First, be sure that you selected the proper microphone input:
• MIC IN if you are using a 5-pins XLR microphone;
• Analog BAL IN 1+2 (MIC 4 XLR) if you are using a 4 XLR microphone.
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
to avoid any feedback loop),
3. Take off the cover and switch on the microphone,
4. Press the Calibrate button in the Setup/Active Xovers page of the Advanced Settings interface,
Adjust the output level:
1. Increase the master level until the test signal moves to the second driver,
2. Use the Altitude
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metering tools, which are automatically displayed on the screen 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 drivers. This will also improve the quality of your measurements,
4. Use the Cancel button to stop the calibration (optional).
IMPORTANT NOTE: Make sure to calibrate your setup with the same volume for each speaker.
Figure 133: Crossover calibration page Figure 134: Metering page
Once the level is adjusted, you can move to the next step to perform the final calibration of the active crossover.