Pioneer W25GR31-51F 10" Butyl Surround Woofer
Power handling: 90 watts RMS/130 watts max * Voice coil diameter: 2" * Impedance: 8 ohms * Frequency response: 26-6,000 Hz * Magnet weight: 30 oz.. * SPL: 90 dB 1W/1m * Vas: 4.77 cu. ft. * Xmax: 3.0mm * Qms: 4.17 * Qes: .36 * Qts: .34 * Fs: 26 Hz * Net weight: 7 lbs. * Manufacturer model number: W25GR31-51F * Dimensions: Overall Diameter: 10-1/8", Cutout Diameter: 9-1/4", Mounting Depth: 4-1/2", Magnet Diameter: 5-3/4", Magnet Height: 1-1/2".