L-Acoustics KS21iW High Power Compact Subwoofer 1×21-Inch
L-Acoustics KS21iW High Power Compact Subwoofer 1×21-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
