High Power 21 inch subwoofer neodymium speaker
Subwoofer Speaker

High Power 21 inch subwoofer neodymium speaker

Item No.: KS21
Max SPL:138 dB
Low frequency limit:29 Hz
Transducers:LF: 1 x 21"
Weight:49 kg / 108 lb
Directivity:standard or cardioid configurations
Description
KS21 Specification
Low frequency limit (-10 dB) 29 Hz 
Maximum SPL 138 dB
Nominal directivity (-6 dB) Standard or cardioid configuration
Transducers 1 × 21″ neodymium cone driver
Acoustical load Bass-reflex, progressive vent design
Nominal impedance 8 Ω
Connectors 2 × 4-point terminal block with push-in connection
Rigging and handling External rigging kits
Inserts for rigging plates etc.
Threaded insert 
Weight (net) 49 kg / 108 lb
Cabinet FIrst grade Russian birch plywood
Front Coated steel grill
Acoustically neutral 3D fabric
Rigging components High grade steel with anti-corrosion coating
Finish Dark grey brown
Feature Powerful
Clear low-frequency
Stringent rigging conditions

The KS21 is a compact subwoofer that can expand the frequency response bandwidth such as the A15.The KS21's progressive vent design, which greatly reduces turbulence and outlet noise when used at high output, also improves low frequency efficiency.



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