Gemini DJ GVX-SUB15P Powered Subwoofer 400W RMS, 1600W peak 15-inch woofer with 2.5-inch (63.5 mm) voice coil and 60oz magnet Built-in amp with limiter circuit Perforated steel mesh grille Water resistant textured black paint Electronic crossover w Adjustable frequency control Built in amp with limiter circuit, 400w rms