A range of high-powered woofers with reinforced aramid fibre cones. Incorporating rubber surrounds, vented magnets and heat resistant 4 layer voice coils, these speakers can easily handle power peaks, yet produce a smooth sound that will please any Hi-Fi enthusiast.Impedance: 8 ohmsvbCrLfVoice coil: 4 layerPower max.: 500WvbCrLfPower rms: 250WvbCrLfOverall depth: 95mmvbCrLfMagnet diameter: 140mmØvbCrLfMounting centres: 194mmØvbCrLfDiameter: 200mm (8")vbCrLfFrequency response: 27Hz - 6kHzvbCrLfMagnet weight: 1.1kg (40oz)vbCrLfSPL @ 1W/1m: 85.5dBvbCrLfWeight: 2.76kg