The One Systems ONE.SP12T is a weather-protected 12-inch two-way horn-loaded speaker with Hi-Z inputs suitable for professional audio applications indoors or for non-coastal applications outdoors. The system's transducers include a 12-inch woofer with a 3-inch voice coil and a compression driver with a 3-inch pure titanium diaphragm coupled to a large-sized 60 x 40-degree horn. Thanks to its high sensitivity and high power handling, the ONE.SP12T provides high acoustic output capability and tremendous projection capability. The ONE.SP12T's enclosure is made of strong, UV-resistant, temperature and moisture resistant rotomolded High-Density Polyethylene (HDPE). The ONE.SP12T includes a strong, robust U-Bracket and is equipped with stainless steel suspension hardware for long life and safety for direct weather applications. The ONE.SP12T's grille uses a 3-layer "Rain Shield" design that provides protection from moisture and dust for the components yet is acoustically transparent. To add to its flexibility, optional pole mount brackets, one with tilt capability, are available. The ONE.SP12Ts premium large-size transducers deliver impressive audio performance with high intelligibility. The ONE.SP12T is designed for Hi-Z (70.7 / 100 volt) operation and features an internally mounted 400 watt, 3-tap autoformer with taps at 400, 200 and 100 watts accessible through a 5-conductor input cable. The ONE.SP12T is also available as a Lo-Z (8 ohm) speaker without the autoformer (ONE.SP12D).