Focal 6-1/2" Midbass Speaker Power handling: 50 watts RMS/100 watts max VCdia: 25mm Le: 1.04 mH Impedance: 8 ohms Re: 6.56 ohms Frequency response: 65-5,000 Hz Fs: 62 Hz SPL: 90.3 dB 1W/1m Vas: 19.26 litres Qms: 5.94 Qes: 0.67 Qts: 0.60 Xmax: 3 mm Dimensions: Outside Diameter: 165mm, Cutout Diameter: 143mm, Depth: 83mm.