L-Acoustics LA4 User Manual

Variable Curvature WST systems presets
Kara II
Kara II and Kara IIi are different versions of the same enclosure. They share the same factory presets and
recommended loudspeaker congurations.
SB18 and SB18 IIi are different versions of the same enclosure. They share the same factory presets and
recommended loudspeaker congurations.
KS21 and KS21i are different versions of the same enclosure. They share the same factory presets and
recommended loudspeaker congurations.
preset(s)
loudspeaker
conguration
Kara II SB18 or KS21* KS28 or SB28 *
acoustic properties
line source [KARA II xxx] — — 55 Hz - 20 kHz
line source +
coupled subwoofers
[KARA II xxx] [xxxx_100] —
line source +
separated subwoofers
[KARA II xxx] [xxxx_60] —
line source +
coupled subwoofers
+ KS28 or SB28
[KARA II xxx] [xxxx_100] [xxxx_60]
down to 32 Hz
(SB18), 31 Hz
(KS21) or 25 Hz
(KS28 or SB28)
reinforced LF contour
single or pair
of enclosures
[KARA II_FI] — —
high-pass at 100 Hz
at response
* with subwoofers as a cardioid array, use [xxxx_xx_C] or [xxxx_xx_Cx].
Kara II(i) adjustable ns and presets
Always ensure that the Kara II(i) adjustable ns are set in accordance with the selected preset:
[KARA II 70]: 70º, [KARA II 90]: 90º, [KARA II 110]: 110º
Refer to the Kara II(i) owner's manual for details.
Avoid using Kara and Kara II in the same line source
The acoustic coupling between Kara and Kara II is not optimal.
[KARA II 70] / [KARA II 90] / [KARA II 110]
loudspeaker elements outputs channels routing gain delay polarity mute
LF OUT 1 LF ON
HF OUT 2 HF
IN A 0 dB 0 ms +
ON
LF OUT 3 LF ON
HF OUT 4 HF
IN A 0 dB 0 ms +
ON
[KARA II_FI]
loudspeaker elements outputs channels routing gain delay polarity mute
LF OUT 1 LF ON
HF OUT 2 HF
IN A 0 dB 0 ms +
ON
LF OUT 3 LF ON
HF OUT 4 HF
IN B 0 dB 0 ms +
ON
The [KARA II_FI] preset is optimized for a 110° ns setting on Kara II.
Preset Guide owner's manual (EN) version 16.0 37

L-Acoustics LA4 Specifications

General

Brand	L-Acoustics
Model	LA4
Category	Amplifier
Language	English