• Features: • Powerful 12″ long-excursion driver provides luscious deep bass and acoustic power • State-of-the-art 1″ phenolic-diaphragm compression driver for exceptional high-frequency reproduction • Wireless-ready — plug in a ULM USB receiver (sold separately) and you’re ready to go • Klark Teknik DSP ensures great sound in any situation • DSP presets for your specific application and speaker