Specifications: Nominal Diameter: 6x9 inch Nominal Impedance: 4 OHM RMS Power Handling: 275W Max Power Handling: 550W Sensitivity (1w/1m): 96dB Frequency Response: 65Hz – 12KHz Recommended Hi-Pass Crossover: 80Hz Motor: Voice Coil Diameter: 1.5" / 38.6mm Voice Coil Former Material: Kapton Winding Material: CCAW (Copper-Clad Aluminum Wire) Cone Material: Paper Bullet Material: Aluminum Surround Material: Cloth Basket Material: Steel Magnet Material: Ferrite Magnet Weight: 27 oz Thiele & Small Parameters: Vas: 14.69 L Xmax: 1.75 Fs (Resonant Frequency): 105 Hz Qms (Mechanical Q): 7.382 Qes (Electrical Q): 0.947 Qts (Total Q): 0.835 Mms (Moving Mass): 8.55 g Cms (Compliance): 0.225 M/N BL (Motor Strength): 6.544 Le (Inductance): 0.578 mH Sd (Cone Area): 207.34 cm² Re (DC Resistance): 3.2 ohm Mmd (Diaphragm Mass): 7.2 g Measurements: Overall Diameter: 260x180mm / 10.24" x 7.09" Overall Depth: 90.1mm / 3.55" Front Mount Baffle Cutout: 220.88 x 151.38mm / 8.70" x 5.96" Mounting Depth: 85mm / 3.35" Motor Diameter: 110mm / 4.33"