Trinnov Audio ALTITUDE 16, User Manual

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9.4.3 _ADJUST THE MASTER OUTPUT LEVEL
The Altitude
16
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 to perform 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;
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/ActiveXovers page of the Advanced Settings interface;
Adjust output level:
1. Increase the master level until the test signal moves to the second driver;
2. Use the Altitude
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’s metering tools, which are automatically displayed on screen to check the level of the micro-
phone 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 measure-
ments;
4. Use the Cancel button to stop the calibration (optional).
Figure 130: Crossover calibration page Figure 131: Metering page
Once the level is adjusted, you can move to the next step to perform the final calibration of the active crossover.
9.4.4 _CALIBRATE THE ACTIVE CROSSOVERS
Low-driver calibration
High-driver calibration
2. 1.
ACTIVE
XOVER
ACTIVE
XOVER
Figure 132: the steps of the calibration process