The KS21i is a compact, high power 21 inch subwoofer designed for permanent installation. It pairs naturally with A10i and A15i systems and can be flown, stacked or run in cardioid configurations.
Highlights
- Deep extension down to 29 Hz with the KS21_60 preset
- 138 dB peak output from a single 21 inch driver
- L-Vents porting for clean, low-turbulence bass
- Standard or cardioid deployment to control rear energy
- IP55 rated, with white, dark grey brown or custom RAL finishes
Key specs
- Low frequency limit: 29 Hz (-10 dB, KS21_60)
- Max SPL: 138 dB peak
- Transducer: 1 x 21" neodymium cone driver
- Nominal impedance: 8 ohms
- Weight: 46 kg
- IP rating: IP55
Forefront Tip
Model the sub to top ratio in Soundvision rather than guessing, and use the cardioid configuration if you need to keep low end off the stage. On an LA7.16i each KS21i needs its own channel (up to 8 per amp) and still reaches its full 138 dB peak.
