The Cerwin Vega CVX-21s powered subwoofer features 2000 watts of class D power with 2 XLR/TRS combo inputs and 3 XLR outputs. The 21-inch angle-fired woofer, with LF extension at 29Hz, reduces port turbulence without sacrificing performance. When multiple subwoofers are used together and rear sound rejection is needed, the new cardioid mode can increase forward volume together by 6 dB while reducing rear volume by 12 dB. Covered in Cerwin-Vega's durable TourShield finish, the CVX-21s subwoofer is perfect for touring, ballrooms, medium and large clubs, outdoor venues, houses of worship, rentals and staging applications. Powered by Cerwin Vega's 65 years of professional live sound solutions, the CVX-21s deliver plenty of power, with precision, sonic precision Covered in Cerwin-Vega's durable TourShield finish, the CVX-21s subwoofer is perfect for touring, ballrooms, medium and large clubs, outdoor venues, houses of worship, rentals and staging applications. Powered by Cerwin Vega's 65 years of professional live sound solutions, the CVX-21s deliver power to spare, with pinpoint sonic precision.