Active 12Xt; Full Range" Mode; Description; Connecting The Active 12Xt To The La4 / La4X - L-Acoustics 12XT Manuel D'utilisation

12XT 12XT
12XT 12XT
COAXIAL ENCLOSURE COAXIAL ENCLOSURE COAXIAL ENCLOSURE COAXIAL ENCLOSURE
user manual user manual
user manual user manual
VERSION 1.4
7.3

ACTIVE 12XT

!
Configure each 12XT as an ACTIVE enclosure by using the specific switch (see section 6.2).
IMPORTANT
7.3.1

"FULL RANGE" mode

7.3.1.1

Description

In ''FULL RANGE'' mode the ACTIVE 12XT enclosures are used in standalone configurations within their nominal
bandwidth (55 Hz - 20 kHz), for applications not requiring low frequency extension.
7.3.1.2

Connecting the ACTIVE 12XT to the LA4 / LA4X

The first two ACTIVE 12XT enclosures are connected to the output channels 1 and 3 of the LA4 / LA4X controller. An
additional ACTIVE 12XT enclosure can be connected in parallel with each first one. Therefore a single LA4 / LA4X
amplified controller can drive up to four ACTIVE 12XT enclosures (see Figure 9).
Note: The system resources are optimized for two or four ACTIVE 12XT per LA4 / LA4X.
Note: This drawing is only a cabling scheme and does not represent a valid configuration.
Figure 9: Four ACTIVE 12XT enclosures connected to an LA4 / LA4X controller
7.3.1.3

[12XTA_FR], [12XTA_FI], and [12XTA_MO] presets

The [12XTA_FR] ''FRONT'' preset features LF and HF shelving EQ for standalone FOH applications (without
subwoofers).
The [12XTA_FI] ''FILL'' preset results in a ''flat'' contour in free field conditions for use in speech reinforcement, classical
music, or close proximity fill applications.
The [12XTA_MO] ''MONITOR'' preset results in a ''flat'' contour in half-space loading conditions for floor monitoring,
wall, or ceiling-mounted applications.
Activate the LOAD PRESET menu from the LA4 / LA4X amplified controller front panel and then select the desired
preset. Refer to the ''LA4 / LA4X'' user manual for additional instructions. The preset is also accessible using the LA
NETWORK MANAGER software (refer to the ''LA NETWORK MANAGER'' user manual). The accessible
parameters in ''FULL RANGE'' mode for the ACTIVE 12XT are shown in the following chart:
Table 4: Accessible parameters in ''FULL RANGE'' mode for the ACTIVE 12XT
Loudspeaker elements
LF
Active
HF
LF
Active
HF
12XT_UM_ML_1-4
IN A
IN B
OUT 1 (IN A)
Amplifier outputs Channels
OUT 1 LF
OUT 2 HF
OUT 3 LF
OUT 4 HF
w w w . l - a c o u s t i c s . c o m
OUT 3 (IN B)
Default parameters
Routing Gain
IN A 0 dB
IN B 0 dB
Delay Polarity Mute
ON
0 ms +
ON
ON
0 ms +
ON
18 en 18
18 18