The L-Acoustics KS21 is a compact, high-performance 21-inch PA subwoofer engineered for precise, musical low-frequency reinforcement. With a formidable maximum SPL of 138 dB and a low-frequency extension down to 29 Hz, it delivers deep, controlled bass that enhances impact without sacrificing clarity. The single 21-inch transducer is optimised for punch and definition, while the enclosure supports standard or cardioid configurations to minimise stage bleed and improve audience coverage. Weighing 49 kg, the KS21 offers an excellent output-to-size ratio for modern touring and fixed installations where space and performance both matter. Built to L-Acoustics’ renowned standards, it integrates seamlessly into professional sound systems requiring consistent, scalable low-end. Ideal for live music, theatre, clubs, corporate events and houses of worship, the KS21 brings authority and articulation to your low-frequency mix. A smart choice when you need tight, powerful bass that’s easy to deploy and control across a wide range of applications.
Includes
- L-acoustics KS21 21" PA Subwoofer
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