Professional 381mmdual subwoofer, specially designed for line array, give you exceptionally low harmonic distortion and high fidelity performance using innovative technology of thunder. Special water & UV resistant coating enclosure is very strong against scratch and damage.*Features- Professional Higt Output Dual Subwoofer - Dual 381mm LF driver with power handling 1400Wrms / 2800Wpeak - Water and UV resistant durable enclosure