ENCLOSURE-CHECK_TB_EN_1.0 l-acoustics.com 3 / 5
Amplified controllers
LA4X must run at least firmware version 1.2.0.29.
Amplified controller load sensors must be calibrated.
Refer to the LOAD SENSOR CALIBRATION TOOL technical bulletin for more information.
Amplified controller must warm up for at least 10 minutes after power up.
Do not power off, reboot or switch to standby mode to avoid resetting the countdown.
Load a preset corresponding to the connected loudspeaker’s family from the embedded preset library.
Presets from the user memories, custom presets or not, may be used on condition they are made of presets from
the same family as the family supported in the embedded preset library.
PROCEDURE
The ENCLOSURE CHECK measurements are not reliable if the requirements are not met.
Make sure the test conditions meet the requirements before starting the check. Refer to section
REQUIREMENTS.
1. Power up the amplified controller and let it warm up for at least 10 minutes.
2. Connect the loudspeaker enclosures to the amplified controller.
3. On the amplified controller, load a preset corresponding to the connected loudspeaker’s family
4. On the amplified controller, use the encoder wheel to select MONITORING & INFO.
Press the OK key or the encoder wheel to validate.
5. Use the encoder wheel to select ENCLOSURE CHECK.
Although the sound pressure levels generated for the ENCLOSURE CHECK are moderate, do not stay
within close proximity of the loudspeakers and consider wearing earplugs.
6. Press the OK key or the encoder wheel to launch the ENCLOSURE CHECK.
Short sinusoidal signals are generated by the amplified controller simultaneously for each connected output.
The results are displayed for each output.
Figure 1: Launching ENCLOSURE CHECK - example with one K2
7. Hold the OUT key to display more details on the corresponding result (only available for NC, NOK and
UNDEF).
Refer to section RESULTS for more information.
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