The T-105E is a ceiling speaker with built-in 70/100V transformer. The 70/100V transformer technique reduces line losses on longer distance and allows easy parallel connection of multiple loudspeakers. The built-in 5-inch speaker drivers are designed of wide frequency response 110 to 16kHz, the multiple power taps of 1.5W, 3W and 6W could meet different applications varies from room size and ambient noise surroundings.