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
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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