Apart SubA165, aktiver subwoofer for installation, 8" woofer, 4 ohms, 100W AES/170W peak, adjustable X-over between 40 - 160 Hz, phase switch, volume control, 89db 1W/1m, 30 - 180 Hz, RCA inputs and Hi-Level input, black, for combination witht MASK and SDQ series!