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.

Visit manufacturers website for more information

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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