L-Acoustics X12, Руководство пользователя

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Loudspeaker congurations
X12 stage monitor with LF
Deployed as a stage monitor with SB15m, SB18 or KS21 subwoofers, an X12 system operates with augmented LF
resources.
The [X12_MO] preset allows for a reference frequency response in stage monitoring applications.
The [SB15_100], [SB18_100] and [KS21_100] presets provide the SB15m, SB18 and KS21 with an upper frequency
limit at 100 Hz for an optimal frequency coupling with the X12.
The X12, SB15m, SB18 and KS21 enclosures are driven by the LA4X / LA8 / LA12X amplied controllers.
X12 with SB15m
With SB15m, the X12 system contour is reinforced by 8 dB at 100 Hz and the system bandwidth is extended down to
40 Hz.
55°
35°
Enclosure X12 SB15m
Preset [X12_MO] [SB15_100]
Frequency range (-10 dB) 40 Hz - 20 kHz
Enclosure ratio 1 X12 : 1 SB15m
Delay values
Do not forget to add the pre-alignment and geometric delays depending on the conguration.
Pre-alignment delays
presets pre-alignment delay values and polarity settings
[X12_MO] + [SB15_100] X12 = 1.7 ms SB15m = 0 ms
[xx_MO] presets for the X series use the amplied controller low latency operating mode. When used along with
subwoofers, it is recommended to use the subwoofers in low latency operating mode. To achieve this, create
custom presets combining low latency channel sets and subwoofer channel sets.
If the subwoofers are driven from a dedicated amplied controller using a subwoofer factory preset, they are
operated in normal latency mode. Therefore, an additional delay should be set to the [xx_MO] low latency
channels to align them: 2.66 ms on LA8 or 3.00 ms on LA4X and LA12X.
X12 owner's manual (EN) version 1.0 31