The CWS8T is a ceiling subwoofer built-in 70v/100v transformer. The 70v/100v transformer technique reduces line losses on longer distance and allows easy parallel connection of multiple loudspeakers. The subwoofer is designed with power switch to let end-user choose low impedance input 8_ or high impedance input 100V or 70V, so it is both suitable for bass strengthen use. The subwoofer works together with the passive loudspeaker like HDS40/C would be superior union for bar, disco, entertainment & karaoke application where have a strict requirements of bass response. The built-in 8” speaker driver is designed of wide frequency response 60-2kHz, the multiple power taps 3.8W/7.5W/15W/30W & 60W are helpful for different applications varies from room size and ambient noise surroundings. The metal grille, ABS baffle and ABS back cover are painted in attractive white colour. Its flush mount type makes the easy and secure installation.