L-Acoustics KS21 Compact Subwoofer

21" transducer - 2-point integrated rigging system - 138 dB Max SPL

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L-Acoustics KS21
5-year Limited Warranty

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Item Number: LAC-KS21
Vendor Part: KS21

Description Specifications Downloads

Solid Foundations

L-Acoustics KS21 (LAC-KS21) is a compact reference subwoofer designed to extend the bandwidth of A15 and A10 systems. KS21 features one high excursion, direct radiating 21" transducer mounted in a bass-reflex tuned enclosure, and operates from 29 ㎐ to 60 ㎐ when associated with A15, or 30 ㎐ to 100 ㎐ when associated with A10. This sub deploys in standard or cardioid setups with dedicated presets, and features a two-point, integrated rigging system that is compatible with A15. Combinations of KS21 and A15 can be flown or stacked to form a full range line source, and the KS21 also integrates a threaded insert for pole-mounting of A15 or A10.

Features:

High power compact reference 21″ subwoofer
Exceptional impact
Augmented short-term SPL
Lightweight (49㎏ / 108 lbs)
Simple, fast, integral rigging

Specifications for the L-Acoustics KS21

{ "Description" : { "High power compact subwoofer" : "1 × 21’’ amplified by LA4X / LA8 / LA12X", "Low frequency limit (-10㏈)" : "29 ㎐ ([KS21_60])", "Maximum SPL" : "138㏈ ([KS21_100])" }, "Nominal directivity" : "Standard or cardioid configurations", "Transducers" : "1 × 21’’ neodymium cone driver", "Acoustical load" : "Bass-reflex, L-Vents", "Nominal impedance" : "8 Ω", "Connectors" : { "IN" : "1 × 4-point speakON", "LINK" : "1 × 4-point speakON" }, "Rigging and handling" : [ "Flush-fitting two-point rigging system", "1 pole mount with M20 x 150 insert", "4 handles, 8 corner stops and 2 ground runners" ], "Weight (net)" : "49㎏ / 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" }

Research Materials for L-Acoustics KS21 (LAC-KS21)

We've added technical materials to help with your buying decision. Even if you're technically inclined, you may want to consider talking to our sales techs to make sure this item is the right fit for your particular use. 800.562.6006

KS21 (LAC-KS21) Specifications

KS21 (LAC-KS21) User Guide

KS21 (LAC-KS21) Drawing

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