Earthquake Sound EQ8 User Manual

Specification

Nominal Basket Diameter
Nominal Impedance
Power Rating
Resonance
Usable Frequency Range
Sensitivity
Magnet Weight
Voice Coil Diameter

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)

Mounting Information

8", 203.2mm

4-Ohms

80 Watts

68Hz ±15%

68Hz - 10kHz

97 dB

43.7 oz.

2" 50.8mm

87.763 Hz

3.800 Ohms

272.716 mH

6.324

0.330

0.313

21.004 liters/ft3

316.733mm/N

8.002 T-M

16.843 grams
4 mm

218.424 sqM

8 6/25", 209.5mm

Sound That Will Move You.

3 51/100"

89.3mm

7 2/25", 180mm

Earthquake EQ8 Pro Audio Series

Recommended Enclosure Volume
Sealed
Vented
Overall Diameter
Cut Out Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Depth

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

liters/ ft3
liters/ ft3

8 6/25", 209.5mm

7 2/25", 180mm
fitted as standard
fitted as standard

.19" x .35", 5 x 9mm

3 51/100", 89.3mm

Earthquake Sound Corporation
2727 McCone Avenue • Hayward, CA 94545 • phone: [phone]
fax: [phone] • www.earthquakesound.com