Hz-124Peak power handling: 600 WattsContinuous power handling: 300 WattsImpedance: DUAL COILTM4 ohm (2 X 4 ohm)2" black anodized Aluminum voice coil former with Kapton layered protection110-oz magnet structureProgressive Nomex spider for maximum excursionDouble stamped steel frameUltra Rigid PolyPropylene coneRubber-Toughen isolated high current Tinsel lead wireSilver-plated spring loaded binding postsDriver Diameter: 12 InchSensitivity: 88 dB SPLFrequency Response: 30-250 HzOptimized for: Ported, Sealed, Band PassMounting Depth: 5-7/8 InchesWeight: 16 lbs