Single 21 inch bass subwoofer high end speaker
group nameSUBWOOFER SPEAKER
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Min Order1 piece
brand nameSinbosen| Audio sound system manufacturer
modelKA21
payment methodT/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Westem Union, Cash, Escrow
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update timeSun, 07 Dec 2025 00:08:51 GMT
Paramtents
Max SPL 138 dB
Low frequency limit 29 Hz
Transducers LF: 1 x 21"
Weight 49 kg / 108 lb
Directivity standard or cardioid configurations
Packging & Delivery
Min Order1 piece
Briefing
The KA21 progressive vent design, which greatly reduces turbulence and outlet noise , also improves low frequency efficiency.
Detailed
| KA21 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 KA21 is a compact subwoofer that can expand the frequency response bandwidth such as the A15.The KA21's progressive vent design, which greatly reduces turbulence and outlet noise when used at high output, also improves low frequency efficiency. First grade Russian birch plywood enclosure with Weather-resistant Polyurea paint,can withstand all kinds of friction and collisions.
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- Nearest port for product export
- Guangzhou, Yantian,Shenzhen, Shekou,Shenzhen
- Delivery clauses under the trade mode
- FOB, CFR, CIF, EXW, FAS, CIP, FCA, DDP, DDU, Express Delivery, DAF
- Acceptable payment methods
- T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, Westem Union, Cash, Escrow