The T-778HW is a wall mount speaker 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 8”+1.5” 2-way speaker driver is designed of wide frequency response 80Hz to 20kHz, the multiple power taps 7.5, 15, 30 and 60W are helpful for different applications varies from room size and ambient noise surroundings. The metal grille, ABS enclosure and stainless mounting bracket are of white color. Easy and secure wall mount installation through the supplied mounting bracket. It is ideal choice for industrial and commercial applications in hotel, school, office and factory where background music and paging is needed.