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THE COPPERHEAD™
Extremely balanced vintage tone with a little country honk and a touch of classic blues tone

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.
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