Recommended for professional audio as a woofer in a vented enclosure. Also good for horn loading and scoops. Specifications: *Power handling: 800 watts RMS/1,600 watts max *VCdia: 4" *Le: 1.04 mH *Impedance: 8 ohms *Re: 5.28 ohms *Frequency range: 51-1,700 Hz *Magnet weight: 109 oz. *Fs: 33 Hz *SPL: 97.3 dB 1W/1m *Vas: 9.1 cu. ft. *Qms: 5.69 *Qes: 0.33 *Qts: 0.32 *Xmax: 4.8 mm *Dimensions: Overall Diameter: 15.21", Cutout Diameter: 14", Mounting Depth: 6.35".