Nominal Basket Diameter: 10"", 254mm, Nominal Impedance: 4 ohms, Watts: 300W, Peak: 1200W, Resonance: 49, 48Hz, Usable Frequency Range: 55Hz - 0, 5kHz, Sensitivity: 91, 9dB, Magnet Weight: 56 oz, Gap Height: 0, 39"", 10, 01mm, Voice Coil Diameter: 2, 5"", 63, 5mm, Thiele and Small Parameters:, Resonant Frequency (fs): 49, 48Hz, DC Resistance (Re): 3, 74, Coil Inductance (Le): 0, 72mH, Mechanical Q (Qms): 12, 88, Electromagnetic Q (Qes): 0, 49, Total Q (Qts): 0, 47, Compliance Equivalent Volume (Vas): 40, 33 liters / 1, 42 cu, ft, Peak Diaphragm Displacement Volume (Vd): 106, 6cc, Mechanical Compliance of Suspension (Cms): 0, 23mm/N, BL Product (BL): 10, 46 T-M, Diaphragm Mass Inc, Airload (MMs): 45, 83 grams, Efficiency Bandwidth Product (EBP): 101, 4, Maximum Linear Excursion (Xmax): 3mm, Surface Area of Cone (Sd): 355, 4 cm2, Maximum Mechanical Limit (Xlim): 8mm, Mounting Information:, Recommended Enclosure Volume, Sealed: 15, 57-28, 32 liters / 0, 55-1 cu, ft, Vented: 24, 07-59, 47 liters / 0, 85-2, 1 cu, ft, Driver Volume Displaced: 87 cu, in, / 1, 42 liters, Overall Diameter: 10, 2"", 259, 04mm, Baffle Hole Diameter: 9, 13"", 231, 9mm, Front Sealing Gasket: Fitted as standard, Mounting Holes Diameter: 0, 25"", 6, 35mm, Mounting Holes B, C, D, : 9, 69"", 246, 13mm, Depth: 4, 6"", 116, 84mm, Materials Of Construction:, Coil Construction: Copper voice coil, Coil Former: Polyimide former, Magnet Composition: Ferrite magnet, Core Details: Vented core, Basket Materials: Pressed steel basket, Cone Composition: Treated Paper Cone, Cone Edge Composition: Foam Edge, Dust Cap Composition: Treated paper dust ca, SKU: TBALL9058