Earthquake Sound EQ88 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)
11.696 Ltr / 0.41 cu.ft.
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
Diaphragm Mass (Mmd)
Maximum Linear Excursion (Xmax)
Surface Area of Cone (Sd)
Mounting Information
Recommended Enclosure Volume
Sealed
Vented
Overall Diameter
Cut Out Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Depth
8-1/4", 209.5mm
8-Ohms
80 Watts
86.6Hz
86.6Hz - 10kHz
94.1 dB
42.2 oz.
2", 50.8mm
86.6Hz ±15%
7.2 Ohms
463.207m mH
8.067
0.454
0.429
175.843m mm/N
12.884 T-M
17.399 grams
3.2 mm
216.424 sqM
liters/ ft3
liters/ ft3
8-1/4", 209.5mm
7 1/16", 180mm
fitted as standard
fitted as standard
8-5 x 9mm
3-4/8", 88mm
Sound That Will Move You
Earthquake EQ88 Pro Audio Series
dBSPL
100
90
80
70
60
50
40
Ohm
200
100
90
80
70
60
50
40
30
20
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
30
20
20 Hz 50 100 200 500 1K 2K 5K 10K 20K
SPL vs Freq
Earthquake Sound Corporation
2727 McCone Avenue • Hayward, CA 94545 • phone: 800-576-7944
fax: 510-732-1095 • www.earthquakesound.com
10
9
8
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