AT Series engineered landscape speakers now feature a coaxially mounted 0.75" aluminum dome tweeter design over a proprietary high-excursion 4" woofer. Constructed of aircraft aluminum dual enclousre, aluminu perforated grill, woofer features an aluminum cone and sntoprene surround, sever powder coat finishe to withstand harsh outdoor environments. AVAILABLE in both 4 Ohm OR 70V (low loss, 50W toroidal transformer) with built in crossover network, allowing these outdoor speakers to play at higher volumes while still maintaining a smoooth frequency response of 80-20kHz.