Delta D21 FS

Product at a Glance

The British Acoustics Delta D21 FS is a flagship self-powered 21" flying subwoofer, meticulously engineered to deliver robust low-frequency performance for professional audio applications. Designed for concert tours, live events, and fixed installations, it ensures precise and powerful bass reproduction. Equipped with a 4000W Class-D amplifier, the Delta D21 FS provides consistent high-output performance, achieving a peak SPL of 137 dB. Its advanced 21" LF driver features a 4" Quattro in/out copper voice coil and a treated waterproof cone, ensuring durability and minimal distortion in demanding environments. The subwoofer includes a 4-point secure fly rigging system, facilitating seamless integration into line array setups and ease of deployment

For advanced control and optimization, it integrates with the Delta Audio Controller (DAC), allowing precise tuning and real-time monitoring. Additionally, the Delta Array Predictor supports the design of subwoofer beams and cardioid stacks, offering flexibility in system configuration. Constructed with a marine birchwood cabinet and a powder-coated durable grill, the Delta D21 FS is built for durability and minimal resonance, ensuring consistent sound performance even at high SPL levels. Its signature brown finish and front power and signal panel with presets enhance usability and aesthetic appeal. Combining advanced technology, powerful amplification, and superior design, the Delta D21 FS sets a new standard for flying subwoofers in professional audio.