EarthQuake EQ88 Specification

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
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
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
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
11.696 Ltr / 0.41 cu.ft.
175.843
(Cms) m mm/N
Earthquake
12.884 T-M
17.399 grams
100
3.2 mm
216.424 sqM
90
80
70
liters/ ft3
liters/ ft3
8-1/4", 209.5mm 60
7 1/16", 180mm
fitted as standard
50
fitted as standard
8-5 x 9mm
40
3-4/8", 88mm
30
20
Earthquake Sound Corporation
2727 McCone Avenue • Hayward, CA 94545 • phone: 800-576-7944
fax: 510-732-1095 • www.earthquakesound.com
EQ88 Pro Audio Series
dBSPL
20 Hz 50 100 200
Sound That Will Move You
500 1K 2K
SPL vs Freq
Ohm
200
100
90
80
70
60
50
40
30
20
10
9
8
7
5K 10K 20K