High-Pass" Mode; Connecting 8Xt To La4; 8Xt_Fr_100], [8Xt_Fi_100], And [8Xt_Mo_100] Presets - L-Acoustics 8XT Manuel D'utilisation

7.3

"HIGH-PASS" mode

In the ''HIGH-PASS'' mode the 8XT 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 two 8XT for one SB118.
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7.3.1

Connecting 8XT to LA4

Each 8XT enclosure must be connected to an LA4 output channel ranging from channel 1 through 4. An additional 8XT
enclosure can be connected in parallel with each of the first ones. Therefore a single LA4 amplified controller can drive
up to eight 8XT enclosures (see Figure 6).
Note: The system resources are optimized for four or eight 8XT per LA4.
OUT 1 (in A)
OUT 2 (in A)
OUT 3 (in B)
OUT 4 (in B)
Figure 6: Eight 8XT enclosures connected to an LA4 controller
7.3.2

[8XT_FR_100], [8XT_FI_100], and [8XT_MO_100] presets

The [8XT_FR_100] preset features a high frequency shelving equalization (FOH applications). The preset also includes
a 100 Hz high-pass filter.
The [8XT_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 [8XT_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 are shown in the following chart:
8XT_UM_ML_1.2 w w w . l - a c o u s t i c s . c o m 13 en