Eminence The Copperhead Extremely balanced vintage tone with a little country honk and a touch of classic blues tone. | THE COPPERHEADā„¢ | | | SPECIFICATION | | | Nominal Basket Diameter | 10 , 254mm | | Nominal Impedance* | 8 ohms | | Power Rating | |  Watts | 75W | | Music Program | | | Resonance | 105Hz | | Usable Frequency Range | 70Hz-5kHz | | Sensitivity*** | 99 | | Magnet Weight | 20 oz. | | Gap Height | 0.312 , 7.92mm | | Voice Coil Diameter | 1.5 , 38.1mm | | | | | THIELE & SMALL PARAMETERS | | | Resonant Frequency (fs) | 105Hz | | DC Resistance (Re) | 7.59 | | Coil Inductance (Le) | 0.37mH | | Mechanical Q (Qms) | 13.27 | | Electromagnetic Q (Qes) | 1.05 | | Total Q (Qts) | 0.98 | | Compliance Equivalent Volume (Vas) | 27.0 liters / 1.0 cu. ft. | | Peak Diaphragm Displacement Volume (Vd) | 0cc | | Mechanical Compliance of Suspension (Cms) | 0.14mm/N | | BL Product (BL) | 8.8 T-M | | Diaphram Mass inc. Airload (Mms) | 16 grams | | Efficiency Bandwidth Product (EBP) | 100 | | Maximum Linear Excursion (Xmax) | 0.0mm | | Surface Area of Cone (Sd) | 366.1 cm2 | | Maximum Mechanical Limit (Xlim) | | | | | | MOUNTING INFORMATION | | | Recommended Enclosure | | | Sealed | Acceptable | | Vented | Acceptable | | Overall Diameter | 10.11 , 256.8mm | | Baffle Hole Diameter | 9.13 , 231.8mm | | Front Sealing Gasket | fitted as standard | | Rear Sealing Gasket | fitted as standard | | Mounting Holes Diameter | 0.23 , 5.7mm | | Mounting Holes B.C. D. | 9.6 , 243.8mm | | Depth | 4.2 , 107mm | | Net Weight | 4.5 lbs., 2 kg | | Shipping Weight | 6.4 lbs., 2.9 kg | | | | | MATERIALS OF CONSTRUCTION | | | Coil Construction | Copper voice coil | | Coil Former | Polyimide former | | Magnet Composition | Ferrite magnet | | Core Details | Non-vented core | | Basket Materials | Pressed steel basket | | Cone Composition | Paper Cone | | Cone Edge Composition | Paper cone edge | | Dustcap Composition | Zurette dust cap |
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