Sound Town STLF-21120 21" Raw Woofer - 600RMS Pro Audio/Subwoofer Driver, 4" Voice Coil, 90-oz Magnet

The Sound Town STLF-21120 is a 21" raw woofer built on a pressed-steel frame for durable performance in PA and DJ systems. It incorporates a 4" voice coil paired with a 90-oz magnet to drive strong low-end response. Rated for 600RMS power handling, this low-frequency driver is ideal as a professional replacement subwoofer for live sound and pro audio applications.