L-Acoustics KS21 High Power Compact Subwoofer

1 x 21" LF

LAC-KS21

POA

Description

KS21 is a compact subwoofer specifically designed to extend the bandwidth of A15 and A10 speaker systems. KS21 features one high excursion, direct radiating 21" transducer mounted in a bass-reflex tuned enclosure. KS21 operates between frequencies 29 Hz to 60 Hz when associated with A15, or 30 Hz to 100 Hz when associated with A10. KS21 features L-Vents that substantially reduce turbulence and port noise at high levels while also increasing LF efficiency. The KS21 frequency response is optimised to couple perfectly with both systems. KS21 features a two-point, integrated rigging system that is compatible with A15. Combinations of KS21 and A15 can be own or stacked to form a full range line source. KS21 also integrates a threaded insert to enable pole-mount configurations of A15 or A10.KS21 can be deployed in standard or cardioid configurations with dedicated presets, for own and stacked applications.

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Specifications

High power compact subwoofer: 1 x 21''
amplified by LA4X / LA8 / LA12X

 

Low frequency limit (-10 dB)

29 Hz ([KS21_60])

Maximum SPL1

138 dB ([KS21_100])

Nominal directivity (-6 dB)

Standard or cardioid configuration

Transducers

1 × 21″ neodymium cone driver

Acoustical load

bass-reflex, L-Vents

Nominal impedance

8 Ω

 

Peak level at 1 m under half space conditions using pink noise with crest factor 4 (preset specified in brackets).

 

Connectors

2 × 4-point terminal block with push-in connection

Rigging and handling

external rigging kits
M6 inserts for rigging plates
M8 inserts for A-U15i
1 DIN580-compatible M8 threaded insert

Weight (net)

49 kg / 108 lb

Cabinet

premium grade Baltic beech and birch plywood

Front

Coated steel grill
Acoustically neutral 3D fabric

Rigging components

high grade steel with anti-corrosion coating

Finish

dark grey brown Pantone 426 C

IP

IP55

Reviews

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