Two (2) Pioneer TS-W255C ten-inch subwoofer drivers enclosed in a dual acoustic-suspension enclosure. Used, but in good condition. Below are some of the specifications... * Manufacture: Pioneer Corp. * Model: TS-W255C * Size: 10-inch (25.5cm) * Music Power: 700 Watts Max. * Power Handling: 350 Watts Nominal * Sensitivity: 87dB (1W/1m) * Frequency Response: 18 ~ 2.5kHz * Recommended Enclosure: 1.0 Cubic Feet * Resistance: 4ohm (3.6 measured) * Cone: Interlaced aramid fiber Reinforced IMPP * Voice Coil: 4-Layer, Long * Voice Coil Bobbin: 12-Slit Aluminum * Magnet: Double Mass High-Power * Conex Damper with Damper Ring * Projected Pole Yoke with Vented Pole * Dual Subwoofer Enclosure * Individual Chambers * .75" MDF Construction * Completely Carpeted * (Height) 12" x (Width) 24" x (Depth) 14" * Spring Type Wire Terminals