The PK SW215 low profile, self-powered, two-way loudspeaker offers precise high output capability in a compact, efficient stage wedge. Coaxial point source technology provides excellent frequency response linearity with low distortion. The high frequency section consists of a 2.5" titanium diaphragm compression driver coupled to a 60-degree conical horn with accurate pattern control to avoid onstage bleed into nearby mixes. The low frequency section uses 3.5" voice coil with dual forced air ventilation to provide high power handling and high excursion mid-bass. Each powered cabinet houses a high-efficiency 1500 watt class D amplifier with built-in DSP, class-D topology achieves ruler-flat frequency response, low distortion and high damping across the audio band. These amplifiers use the latest generation power MOSFET transistors and highly optimized output stage for up to 95% efficiency, allowing for quiet fan-less operation. The cabinet is constructed from 100% void-free Baltic birch and coated in the industry’s toughest EXL Polyurea finish. Perforated metal black grills lined with acoustic black foam further enhance the weather resistant properties of double treated transducer cones.