SpecificationsImpedance8 ohmsMinimum Impedance 8.5 ohms @ 9.0 khzD. C. Resistance 6.1 ohmsAES Power Rating25 WattsProgram Power 50 WattsSensitivity (1W/1m)107dB 1w @ 1mFrequency Response4kHz - 20kHzRecommended Crossover 5.0 kHz or higherDispersion (H x V) 40° ConicalVoice Coil Diameter 1.5" / 37.6 mmMagnetic Assembly Weight 2.64 lb. / 1.2 kg. Flux Density 1.55TBL Factor 5.2 N/AMounting InformationOverall Diameter4" x 4" / 102mm x 102mmOverall Depth 2.79" / 71mmBaffle Cutout Dimensions 3.62" / 92mmBolt Circle Diameter 4.21" / 107mmNet Weight 3.5 lb. / 1.6 kg. Shipping Weight 3.67 lb. / 1.67 kg. MaterialsDiaphragmAluminumVoice CoilEdgewound Aluminum RibbonVoice Coil FormerKaptonMagnetFerrite