High-Pass" Mode; Connecting Passive 12Xt To La4; 12Xtp_Fr_100], [12Xtp_Fi_100], And [12Xtp_Mo_100] Presets - L-Acoustics 12XT Manuel D'utilisation

12XT
COAXIAL ENCLOSURE
user manual
VERSION 1.2
7.2.2

"HIGH-PASS" mode

In the ''HIGH-PASS'' mode the PASSIVE 12XT enclosures are 100 Hz high-pass filtered to allow for coupling with the
dedicated complimentary SB118 subwoofers. The bandwidth of the system is extended down to 32 Hz. The
recommended ratio is one PASSIVE 12XT for one SB118.
7.2.2.1
Each PASSIVE 12XT enclosure must be connected to an LA4 output channel ranging from channel 1 through 4.
Therefore a single LA4 amplified controller can drive up to four PASSIVE 12XT enclosures (Figure 7).
Note: The system resources are optimized for four PASSIVE 12XT per LA4.
IN A
IN B
Figure 7: Four PASSIVE 12XT enclosures connected to an LA4 controller
7.2.2.2
The [12XTP_FR_100] preset features a high frequency shelving equalization (FOH applications). The preset also
includes a 100 Hz high-pass filter.
The [12XTP_FI_100] preset results in a nominally flat contour in free field conditions (speech reinforcement, classical
music, or fill distributed applications). The preset also includes a 100 Hz high-pass filter.
The [12XTP_MO_100] preset results in a nominally flat contour in half-space loading conditions (floor monitoring as well
as wall or ceiling-mounted applications). The preset also includes a 100 Hz high-pass filter.
Activate the LOAD PRESET menu from the LA4 amplified controller front panel and then select the desired preset.
Refer to the ''LA4 - User Manual'' for additional instructions. The preset is also accessible using the LA NETWORK
MANAGER software (refer to ''LA NETWORK MANAGER - User Manual''). Accessible controls in ''HIGH-PASS''
mode for PASSIVE 12XT are shown in the following chart:
12XT_UM_ML_1.2
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Connecting PASSIVE 12XT to LA4

OUT 1 (in A)
OUT 2 (in A)

[12XTP_FR_100], [12XTP_FI_100], and [12XTP_MO_100] presets

w w w . l - a c o u s t i c s . c o m
PASSIVE 12XT
OUT 3 (in B)
OUT 4 (in B)
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