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7.3
"HIGH-PASS" mode
7.3.1
Description
In ''HIGH-PASS'' mode the 8XTi enclosures are 100 Hz high-pass filtered to allow using them along with the dedicated
complimentary SB18i subwoofers. The bandwidth of the system is extended down to 32 Hz. The recommended ratio is
two 8XTi for one SB18i.
7.3.2
Connecting the 8XTi to the LA4 / LA4X
Each 8XTi enclosure must be connected to an LA4 / LA4X output channel ranging from channel 1 through 4. An
additional 8XTi enclosure can be connected in parallel with each of the first ones. Therefore a single LA4 / LA4X
amplified controller can drive up to eight 8XTi enclosures (see Figure 5).
Note: The system resources are optimized for four or eight 8XTi per LA4 / LA4X.
Figure 5: Eight 8XTi enclosures connected to an LA4 / LA4X controller
7.3.3
[8XT_FR_100], [8XT_FI_100], and [8XT_MO_100] presets
The [8XT_FR_100] ''FRONT'' preset features a HF shelving EQ and a 100 Hz high-pass filter for FOH applications with
subwoofers.
The [8XT_FI_100] ''FILL'' preset results in a ''flat'' contour down to 100 Hz in free field conditions for use in speech
reinforcement, classical music, or close proximity fill applications.
The [8XT_MO_100] ''MONITOR'' preset results in a ''flat'' contour down to 100 Hz 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 presets are also selectable using the
LA NETWORK MANAGER software (refer to the ''LA NETWORK MANAGER'' user manual). The accessible
parameters in ''HIGH-PASS'' mode are shown in the following chart:
Loudspeaker elements
8XTi
8XTi
8XTi
8XTi
Note: The complimentary SB18i subwoofers must be connected to additional LA4 / LA4X or LA8 amplified controllers.
Please refer to the ''SB18i'' user manual.
8XTI_UM_ML_1-1
IN A
IN B
OUT 1 (IN A)
OUT 2 (IN A)
Table 3: Accessible parameters in ''HIGH-PASS'' mode
Amplifier outputs
Channels
OUT 1
OUT 2
OUT 3
OUT 4
w w w . l - a c o u s t i c s . c o m
!
IMPORTANT
OUT 4 (IN B)
OUT 3 (IN B)
Default parameters
Routing
Gain
PA
IN A
0 dB
PA
IN A
0 dB
PA
IN B
0 dB
PA
IN B
0 dB
This picture is a
cabling scheme and
does not represent
a valid configuration.
Delay
Polarity
Mute
0 ms
+
ON
0 ms
+
ON
0 ms
+
ON
0 ms
+
ON
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