Datasheet

The Art and Science of Sound
THE COPPERHEAD™
Nominal Basket Diameter
Nominal Impedance*
Power Rating**
Resonance
Usable Frequency Range***
Sensitivity
Magnet Weight
Gap Height
Voice Coil Diameter
10”, 254mm
8 ohms
75W
105Hz
70Hz-5kHz
99
20 oz.
0.312”, 7.92mm
1.5”, 38.1mm
Specication
Resonant Frequency (fs)
DC Resistance (Re)
Coil Inductance (Le)
Mechanical Q (Qms)
Electromagnetic Q (Qes)
Total Q (Qts)
Compliance Equivalent Volume (Vas)
Peak Diaphragm Displacement Volume (Vd)
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
Diaphragm Mass inc. Airload (Mms)
Efciency Bandwidth Product (EBP)
Maximum Linear Excursion (Xmax)
Surface Area of Cone (Sd)
Maximum Mechanical Limit (Xlim)
105Hz
7.59
0.37mH
13.27
1.05
0.98
27.0 liters / 1.0 cu. ft.
0cc
0.14mm/N
8.8 T-M
16 grams
100
0.0mm
366.1 cm2
Thiele & Small Parameters
Recommended Enclosure Volume
Sealed
Vented
Overall Diameter
Bafe Hole Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Net Weight
Shipping Weight
Acceptable
Acceptable
10.11”, 256.8mm
9.13”, 231.8mm
tted as standard
tted as standard
0.23”, 5.7mm
9.6”, 243.8mm
4.2”, 107mm
4.5 lbs., 2 kg
6.4 lbs., 2.9 kg
Mounting Information
Copper voice coil
Polyimide former
Ferrite magnet
Non-vented core
Pressed steel basket
Paper Cone
Paper cone edge
Zurette dust cap
Materials of Construction
Please inquire about alternative impedances.
Multiple units exceed published rating evaluated under EIA 426A noise source and test standard while in a free-air, non-temperature controlled environment.
The average output across the usable frequency range when applying 1W/1M into the nominal impedance. Ie: 2.83V/8ohms, 4V/16ohms.
Eminence response curves are measured under the following conditions: All speakers are tested at 1w/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25” supplied microphone (software
calibrated) mounted 1m from wall/bafe | 2ft. X 2ft. bafe is built into the wall with the speaker mounted ush against a steel ring for minimum diffraction | Haer P1500 Trans-Nova amplier | 2700 cu.ft. chamber with
berglass on all six surfaces (three with custom-made wedges)
*
**
***
Extremely balanced vintage tone with a little country honk and a touch of classic blues toneColoration:
Country, Blues, Bluegrass, and FunkGenre:
cop’per head n. a venomous 10” American guitar speaker, very bright and prone to bite