Calibration - Trinnov Audio ST2 Pro Quick Start Manual

ST2 PRO

5 | CALIBRATION

The First thing to consider here is that the test signal could be very loud.
Before going any further, now is a good time to make sure the red LED of the microphone is
turned OFF.
To prevent this process from hurting your ears or speakers, take a look at the top of the interface
and reduce the volume of the ST2 Pro by pressing the "
control in dB. Start by turning it down to -30dB. This is a good number to start with for most
systems.
If you ignore this step, a message on-screen will appear right before calibration warning you
that the overall volume is louder than average.
When ready, press on "Calibrate".
You will then hear 3 consecutive bursts of sound going through the speaker one by one until
all the speakers in the system have been measured by our 3D microphone.
If the signal is too quiet, it will stay on the 1st loudspeaker. If so, you can gradually increase the
volume while hearing the test signal coming through the loudspeaker until it moves to the next
one. Then, cancel it and press calibrate again to get a correct measurement.
The most common warning messages are explained below:
"Crest factor too low for capsules (?)"
• Check the input meters in the Processor/Meters page.
If the Input level is null on at least one of the 4 channels, go back to the Optimizer
Settings/ Calibration page and stop the calibration.
• Make sure that the microphone input routing is correct.
• The microphone battery may be low.
• If so the red led at the front of the microphone indicates its level.
• The microphone and or cable could have been damaged.
"Unstable position for speaker"
• Someone may have moved during measurement.
• An obstacle between the microphone and any speakers can disturb the measurement.
• The bandwidth of one of the speakers may be too narrow.
• Too many strong reflections around the microphone environment disturb the impulse
response measurement.
"Unable to localize speaker"
• Dipole/bipole speakers provide more than one wave at the same time, which can cause issues.
• Several speakers chained, providing more than one wave at the same time.
20
-
" (minus) button. This is the volume