Cerwin Vega IT-10.0 Subwoofer Made in USA. Specs of the driver: Intense technology 10'' subwoofer driver Power Handling (Peak): 500 Watts Power Handling (RMS): 250 Watts Impedance: Single 4 Ohm Frequency Response: 20-500Hz SPL 2.8V/1M: 91 dB Infused Kevlar/Crystalline Oxide Fiber Cone Natural Butyl Rubber Surrounds Nomex Spider Material Deep-Draw Diecast Aluminum Frame Proprietary Integrated Dust Dome Box specs: Sealed, independent compartments for each driver Front baffle - MDF 35mm thickness Box walls MDF - 25 mm thickness 650 x 320 x 300mm Weight: 11 kg Gold plated speaker terminals. Weight( with drivers): 20 kg. Perfect working condition, very musical. Came from Japan and never used here.