STUDIO 650P 10" Powered Sub-Woofer 500W, 10" (254mm) PolyPlas Low-Frequency Woofer, Power: 250W RMS (500W Dynamic), Frequency Response: 28 Hz - 150 Hz, Auto Power, Crossover, Level, Phase, Input: One (1) Line-Level LFE Input, Enclosure Type: Bass-Reflex via Bottom-Firing Tuned Port, Dimensions (W x D x H): 395 x 395 x 395 mm, Weight: 23 lbs (kg)