The One Systems ONE.SP12D is a weather-protected, horn-loaded 12-inch two-way speaker suitable for professional audio applications indoors or for non-coastal applications outdoors. The system's powerful transducers include a 12-inch woofer with a 3-inch voice coil and a large 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 its 600 watt continuous power handling, the ONE.SP12D provides high acoustic output capability with tremendous projection capability. The ONE.SP12D's rotomolded enclosure is made of strong, UV, temperature and moisture resistant High-Density Polyethylene (HDPE). The ONE.SP12D 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.SP12D'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.SP12D's premium large-size transducers deliver impressive audio performance with high intelligibility and huge 130 dB continuous, 136 dB peak output capability. The ONE.SP12D is also available as a Hi-Z (70.7 / 100 volt) model with an internally mounted 400 watt, three-tap autofomer (ONE.SP12T).