Welcome - L-Acoustics K2 User Manual

Welcome

Welcome
Thank you for purchasing the L-Acoustics K2.
This document contains essential information on using the system properly.
As part of a continuous evolution of techniques and standards, L-Acoustics reserves the right to
change the specications of its products and the content of its document without prior notice. Please
check www.l-acoustics.com on a regular basis to download the latest document and software updates.
K2 variable curvature WST line source
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The K2 is the full range element of a WST line source with variable curvature and adjustable horizontal directivity.
The K2 loudspeaker enclosure is based on a 3-way active design. It comprises 4 input sections: 2 LF and 1 MF at a
nominal impedance of 8 ohms, and 1 HF at a nominal impedance of 16 ohms. It features two 12" speakers and four
6.5", all direct-radiating neodymium speakers mounted in a bass-reex enclosure, and two 3" neodymium diaphragm
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compression drivers coupled to individual DOSC waveguides and adjustable directivity ns. The transducers are
implemented in a K-shape conguration. The cabinet is made of machined rst grade Baltic birch plywood (for top,
bottom and back panels) combined to die cast aluminum side panels to ensure maximum acoustical and mechanical
integrity while reducing weight to the minimum. A four-point rigging system is integrated into the cabinet.
The K2 enclosure operates over the nominal frequency range of 35 Hz to 20 kHz. Its LF contour can be reinforced
with the dedicated K1-SB extension and its bandwidth can be extended down to 25 Hz with the SB28 subwoofer. In
the horizontal plane, the directivity is adjustable down to 300 Hz, with two symmetric settings (70° or 110°) and two
asymmetric settings (90° as 35°/55° or 55°/35°).
The K2 rigging system allows vertical assembly of enclosures with various inter-element angles (up to 10°), constituting
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a line array with variable curvature. The combination of the coplanar symmetry and the DOSC waveguide in the HF
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region ensure a perfect acoustic coupling between the elements of an array. The WST (Wavefront Sculpture Technology)
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criteria are fullled, so that such an array can be qualied as a true line source. Any WST line source provides a smooth
tonal response and a coverage that is free of secondary lobes over the entire frequency range.
The K2 is driven and quad-amplied by the LA8 or LA4X controller with factory presets which ensure linearization,
protection, and optimization for the loudspeaker system.
K2/SB28 user manual (EN) version 7.0 5