L-Acoustics LA4X Technical Bulletin

ENCLOSURE-CHECK_TB_EN_1.0 l-acoustics.com 5 / 5
Illustration 2 shows the results of an ENCLOSURE CHECK on one K2 loudspeaker enclosure: LF and HF sections
results are OK and MF section result is NC.
Figure 2: Displaying more details on NC result – example with one K2
Holding OUT3 displays the details for the NC results:
 604Hz: tested frequency
 OPEN: open circuit
 2/4: two of the four transducers of the MF section are operational
If no fault can be found in the cables and connections, the K2 should be further investigated for continuity failures in
the MF section, then ENCLOSURE CHECK should be repeated.
Illustration 3 shows the results of an ENCLOSURE CHECK on four 5XT loudspeaker enclosures: three with results
OK, and one with result UNDEF.
Figure 3: Displaying more details on UNDEF result - example with four 5XT
Holding OUT4 displays the details for the UNDEF result:
 for the HF transducer:
o 14000Hz: tested frequency
o -39%: variation from the expected range
o ?/1: further investigation is needed
 for the LF transducer:
o 400Hz: tested frequency
o +1%: variation from the expected range
o 1/1: transducer is operational
Low variations from the expected range are acceptable: displayed percentage can be different from 0 and all
transducers considered operational. It means the measured value pertains to the acceptable range expected for the
considered section in nominal conditions of measurement.
If the requirements are met, the used preset is from the loudspeaker’s family, and cables and connections are in
working order, the 5XT should be further investigated for issues in the HF transducer, then ENCLOSURE CHECK
should be repeated.

L-Acoustics LA4X Specifications

General

Brand	L-Acoustics
Model	LA4X
Category	Controller
Language	English