Operation
AES/EBU GAIN
AES/EBU GAIN must be used when the fallback mode is enabled, a digital audio source is connected to input pair AB,
and an analog audio source is connected to input pair CD, to align the digital audio source level to the analog level for
a seamless fallback switch — refer to section FALLBACK MODE (p.43). AES/EBU gain can be set from -12 dB to +12 dB
by steps of 0.1dB.
The AES/EBU gain must be set according to the analog audio source’s calibration (based on manufacturer’s specs or
user measurements) and the amplied controller’s analog inputs calibration (0 dBfs for an input signal of +22 dBu). These
examples illustrate the most common cases:
analog audio source calibration AES/EBU gain
+18 dBu for 0 dBfs - 4 dB
+24 dBu for 0 dBfs + 2 dB
+22 dBu for 0 dBfs
or, if fallback is disabled
or, if a digital audio source is connected to input pair CD
+ 0 dB
‿AES/EBU GAIN ‼※
+0.0dB
OUT1+
AES/EBU GAIN
+2.0dB
‿AES/EBU GAIN ‼※
+2.0dB
Procedure
1. From the main menu, select INPUT SETTINGS.
2. Press the OK key or the encoder wheel to validate.
3. Turn the encoder wheel to select AES/EBU GAIN.
4. Press and hold the ESC, OK or OUT1 key.
5. Turn the encoder wheel to select an input value.
Setting applies in real-time.
Turn the encoder wheel for steps of 0.1 dB.
Press and turn the encoder wheel for steps of 1 dB.
6. Release the key.
LA4X user manual (EN) version 9.1 44
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