Check the listing for details. Eminence KappaLITE 3015 OEM 15" Neodymium Pro Audio Woofer Midbass Speaker 8 ohm. Condition: New. Listed at 169.00 USD. Eminence KappaLITE 3015 OEM 15" Neodymium Woofer 8 ohmNeodymium magnet motor provides high performance without the weightPaper cone with solid composition paper dust cap and cloth cone edgeCast aluminum chassis with integrated motor heatsink for improved coolingLarge 3" copper voice coil with polyimide former and vented pole pieceSmooth response out to 1200 Hz Recommended as a woofer or midbass in vented professional audio enclosuresSpecifications:Diameter: 15" Impedance: 8 OhmUsable Frequency Range: 40 Hz - 4000 HzPower: 450W RMSProgram Power: 900WSensitivity: 100.8 dBVoice Coil Diameter: 3"Fs: 45 HzQms: 6.7Qes: 0.36Qts: 0.34Vas: 153 litersBL: 18.6 TmMMs: 84 gEBP: 125Xmax: 5.9 mmXlim: 11 mmOverall Diameter: 15.32"Cutout Diameter: 14"Depth: 6.8"Weight: 7.9 lbsVented enclosure volume: 1.8 - 5.1 cu.ft.Sealed enclosure volume: N/A