L-ACOUSTICS LA8 [42/56] La la la la888

L-ACOUSTICS LA8 [42/56] La la la la888
LA
LALA
LA8
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8
AMPLIFIED CONTROLLER
AMPLIFIED CONTROLLERAMPLIFIED CONTROLLER
AMPLIFIED CONTROLLER
USER MANUAL
USER MANUALUSER MANUAL
USER MANUAL
VERSION 4.0
LA8_UM_EN_4-0
w w w . l - a c o u s t i c s . c o m
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7.9.4 AES/EBU IN GAIN control
This control page is for setting the LA-AES3 input gain from -12 dB to +12 dB by 0.1 dB steps. It helps aligning the
digital audio source level to the analog level value so as to ensure seamless fallback switch from AES/EBU to ANALOG
inputs in case of fallback mode activation [7.9.3].
The AES/EBU input gain must be set according to the audio source’s analog calibration (based on manufacturer’s specs
or user measurements) and the amplified controller’s analog inputs calibration (0 dBfs for an input signal of +22 dBu).
The three following examples illustrate the most common cases:
If the analog source is calibrated at +18 dBu for 0 dBfs, set the AES/EBU input gain at -4 dB.
If the analog source is calibrated at +24 dBu for 0 dBfs, set the AES/EBU input gain at +2 dB.
If the analog source is calibrated at +22 dBu for 0 dBfs or if the fallback option is disabled, set the AES/EBU
input gain at +0 dB.
The AES/EBU IN GAIN setting procedure is the following:
1. Display the AES/EBU IN GAIN control page by rotating the encoder wheel.
2. Select the gain value between -12 dB and +12 dB as follows: hold the IN A or IN B key, turn the encoder wheel
so as to display the chosen value (applying in real-time), and release the key.
Note: Obtain 0.1 dB step-setting by turning the encoder wheel or 1 dB step-setting by simultaneously pressing
and turning the encoder wheel.
Figure 36: AES/EBU IN GAIN setting
7.9.5 DELAY UNIT control
The DELAY UNIT control page is for selecting whether the delay is displayed in milliseconds, feet or meters.
Modify this setting by applying the following procedure:
1. Select the DELAY UNIT control page by rotating the encoder wheel and press the OK key or the
encoder wheel (or press the ESC key to cancel and return to the last menu).
2. Select the desired unit (ms, feet, or meters) by turning the encoder wheel. Press the OK key or the
encoder wheel to validate the setting (or press the ESC key to cancel and return to the last menu).
As an example, in Figure 29, the delay unit has been modified from millisecond to meter.
7.9.6 OUT CH TEMP information
The OUT CH TEMP information page displays the temperature of each individual amplifier channel circuit as a
percentage of the operating temperature range: from -5°C = 0 % to 85°C = 100%. As an example, in Figure 29, the
temperature percentage at OUT 1 to OUT 4 channels is respectively 52, 53, 50, and 48 %.
7.9.7 SPK HANDLING information
The SPK HANDLING information page displays the RMS voltage measured at each individual amplifier circuit
output as a percentage of the maximum voltage supported by the particular speaker section connected to it. As an
example, in Figure 29, the RMS voltage at OUT 1 to OUT 4 channels is respectively 12, 10, 13, and 11 % of the
maximum values.
IN A or
IN B
AES/EBU IN GAIN
+0.0dB
+1.5dB

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