Features: Size: 12". Woofer Cone Material: Composite IMPP Cone using Interlaced Aramid Fiber. Woofer Cone Design: Cone Reinforcement Arcs. Surround: Wide Roll, Three-Layer Fiber Woven Radial. Voice Coil: 4-Layer, Long Voice Coil. Voice Coil Wire: Polyester-Imide Resin Coated. Voice Coil Bobbin: 12 Slit Aluminum. Damper (Spider): Conex. Damper Ring: Yes. Top Plate: Standard. Projected Pole Yoke with Vented Pole: Magnet Construction: Double Mass High-Power Basket Design: Stamped Basket with Magnet Cover. Gasket: Molded. Wire Terminals: Spring-Compression. Specifications: Watts MAX Music Power: 1000 Watts. Watts Nominal Power Handling: 400 Watts. Frequency Response: 18 ~ 500Hz. Sensitivity(SPL): 89dB. Ohm Rating: SVC:4, DVC: 2 or 8. Recommended Enclosure 0.85 ~ 1.75 Cubic Feet. Dimensions: 13" x 7". Mounting Depth: 6-1/4". Accessory Grill: UD-G306 Available