Earthquake Sound Speaker EQ8 User Manual

Specification  
Nominal Basket Diameter  
Nominal Impedance  
Power Rating  
8", 203.2mm  
4-Ohms  
80 Watts  
68Hz ±15%  
68Hz - 10kHz  
97 dB  
8 6/25", 209.5mm  
Sound That Will Move You.  
Resonance  
Usable Frequency Range  
Sensitivity  
Magnet Weight  
43.7 oz.  
2" 50.8mm  
Voice Coil Diameter  
3 51/100"  
89.3mm  
Thiele & Small Parameters  
Resonant Frequency (fo)  
DC resistance (Re)  
Coil Inductance (Le)  
87.763 Hz  
3.800 Ohms  
272.716 mH  
6.324  
7 2/25", 180mm  
Mechanical Q (Qms)  
Electromagnetic Q (Qes)  
Total Q (Qts)  
Compliance Equivalent Volume (Vas)  
0.330  
0.313  
21.004 liters/ft3  
Mechanical Compliance of Suspension (Cms)316.733mm/N  
Earthquake EQ8 Pro Audio Series  
BL Product (BL)  
8.002 T-M  
16.843 grams  
4 mm  
Diaphragm Mass (Mmd)  
Maximum Linear Excursion (Xmax)  
Surface Area of Cone (Sd)  
218.424 sqM  
Mounting Information  
Recommended Enclosure Volume  
Sealed  
Vented  
liters/ ft3  
liters/ ft3  
Overall Diameter  
Cut Out Diameter  
Front Sealing Gasket  
Rear Sealing Gasket  
Mounting Holes Diameter  
Depth  
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  
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  
Earthquake Sound Corporation  
2727 McCone Avenue • Hayward, CA 94545 • phone: 800-576-7944  
 

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