L-Acoustics – KS21

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

Physical specs
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