Features: Subwoofer Box System Rear Vented Design Silver Paper Cone with Rubber Surround One 10'' High Power 4 Ohm Subwoofer Specially Treated Black Rubber Edge Suspension 2'' Aluminum Voice Coil Bass Reflex Vent for Added Sub- Bass Response High-Quality Carpeted Construction What's in the Box: Subwoofer Box Technical Specs: Construction Materials: 15mm Particleboard Power Rating: 500 Watts Max Power Voice Coil: 2.0'' Impedance: 4 Ohms Magnet: 40 Oz Sensitivity: 90 dB Frequency Response: 35-300 Hz Product Dimensions (L x W x H): 18.9'' x 13.4'' x 12.2'' -inches Sold as: 1 Weight: 18.64 lbs.