L-Acoustics KS21iW High Power Compact Subwoofer 1x21-Inch

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Write a review Q&A SKU: KS21IW PSSL ID#: 112553
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Description

L-Acoustics KS21iW High Power Compact Subwoofer 1x21-Inch

KS21i is a compact reference subwoofer designed to extend the bandwidth of A15i and A10i systems in installation applications. KS21i features one high excursion, direct-radiating 21'' transducer mounted in a bass-reflex tuned enclosure. KS21i couples with A15i and A10i to reinforce contour and extend bandwidth to 29 Hz and 31 Hz respectively. KS21i features L-Vents that substantially reduce turbulence and port noise at high levels while also increasing LF efficiency. The association of modern components and laminar vents greatly improves short-term SPL compared to similar-sized subwoofers. The KS21i frequency response is optimized to couple perfectly with both A Series install systems. KS21i can be flown and stacked in combination with A15i or A10i to form a full range line source. KS21i can be deployed in standard or cardioid configurations with dedicated presets, for flown and stacked deployment.

Specifications:

  • Description: High power compact subwoofer: 1 × 21" amplified by LA2Xi2 / LA4X / LA8 / LA12X
  • Low frequency limit (-10 dB): 29 Hz ((KS21_60))
  • Maximum SPL: 138 dB ((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:
    • 4-point terminal block with push-in connection
    • Connector sealing plate with cable gland
  • Rigging and handling:
    • external rigging kits
    • M6 inserts for rigging plates and accessories
    • M8 inserts for A-U15i
  • Safety: 1 DIN580-compatible M8 threaded insert
  • Weight (net): 46 kg / 101 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
    • Pure white RAL 9010
    • Custom RAL code on special order
  • IP: IP55

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