Low pass crossover and phase control
klipsch
Klipsch R-120SW Subwoofer, Black
29 hertz 120 hertz plus /- 3 dB
Klipsch Reference R-112SW Subwoofer, Black with WA-2 Wireless Subwoofer Kit
12-Inch spuncopper Cerametallic woofer.All-digital amplifier delivers 600 watts of dynamic power
Klipsch R-41SA Powerful Detailed Home Speaker Set of 2 Black
4″ spun-copper woofer