L-Acoustics
L-Acoustics KS21i

L-Acoustics

L-Acoustics KS21i

KS21i High power subwoofer, 21

Product code
KS21I
Category
Audio
Weight
46 kg

Specifications

Electroacoustic specs

Low frequency limit (-10 dB)
29 Hz ( [KS21_60] )
Maximum SPL
138 dB ( [KS21_100] ) with LA2Xi ( bridge mode ) / LA4X / LA8 / LA12X; 131 dB ( [KS21_100] ) with LA2Xi
Nominal directivity (-6 dB)
standard or cardioid configuration
Transducers
1 × 21″ neodymium cone driver
Acoustical load
bass-reflex , L-Vents
Nominal impedance
8 Ω

Physical specs

Connectors
1 × 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
Dimensions
752 mm (29.6 in) / 569 mm (22.4 in) / 629 mm (24.8 in)
Weight (net)
46 kg / 101 lb
Cabinet
premium grade Baltic beech and birch plywood
Front
coated steel grill; acoustically neutral 3D fabric
Finish
dark grey brown Pantone 426 C; pure white RAL 9010; custom RAL code on special order
IP
IP55

Specification from L-Acoustics