EarthQuake EQ6.5 Pro Audio Series Specification
Earthquake EQ6.5 Pro Audio Series
Sound That Will Move You.
Earthquake Sound Corporation
2727 McCone Avenue • Hayward, CA 94545 • phone: 800-576-7944
fax: 510-732-1095 • www.earthquakesound.com
Specification
Nominal Basket Diameter
Nominal Impedance
Power Rating
Resonance
Usable Frequency Range
Sensitivity
Magnet Weight
Voice Coil Diameter
6.5", 165.1mm
4-Ohms
50 Watts
112Hz ±15%
112Hz - 10kHz
92 dB
17.7 oz.
1 1/5", 35.5mm
Thiele & Small Parameters
Resonant Frequency (Fo)
DC resistance (Re)
Coil Inductance (Le)
Mechanical Q (Qms)
Electromagnetic Q (Qes)
Total Q (Qts)
Compliance Equivalent Volume (Vas)
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
Diaphragm Mass (Mmd)
Maximum Linear Excursion (Xmax)
Surface Area of Cone (Sd)
112.338 Hz
3.8-Ohms
274.310 mH
4.328
0.887
0.303
3.738 liters/ft3
142.372mm/N
8.024 T-M
13.188 grams
4 mm
138.343 sqM
Mounting Information
Recommended Enclosure Volume
Sealed
Vented
Overall Diameter
Cut Out Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Depth
2.8-5.7 liters/0.1-0.2 ft3
3.4-15.6 liters/0.12-0.55 ft3
6 61/100", 168mm
5 2/3", 144mm
fitted as standard
fitted as standard
2 73/100", 69.4mm
Materials of Construction
Copper voice coil
Polyimide former
Ferrite magnet
Vented and extended core
Stamped steel basket
Paper cone
Cloth surround
Solid composition paper dust cap
21/100" x .15", 5.5 x 4mm
6 61/100", 168mm
2 73/100"
69.4mm
5 2/3", 144mm
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