21S Subwoofer

The 21S SUB is a high-performance subwoofer designed for integration with the xS Series and xA Series loudspeakers, ideal for a broad spectrum of fixed installation environments. Featuring a single long excursion 21-inch driver within a bass reflex enclosure, the 21S SUB delivers powerful low-frequency output from a compact cabinet. Its specially engineered reflex port supports high sound pressure levels while maintaining a minimal footprint. In INFRA mode, the 21S SUB extends system performance down to 33 hertz, making it a valuable addition to other d&b subwoofers. The unit can be flown or ground stacked in either orientation and supports individual or dual-cabinet suspension. Built from marine-grade plywood with a durable black paint finish, the 21S SUB is equipped with a metal grille and acoustically transparent foam for front protection. M10 threaded inserts are located on the top, bottom, and rear for rigging compatibility. The Weather Resistant version meets IP55 standards and includes a fixed cable for outdoor use.

Installation specific high performance subwoofer with compact footprint

• Components 21″
• Dispersion Omni directional
• SPLmax 135 dB
• Weight 54 kg / 119 lb