Earthquake Sound Car Speaker EQ8S8 User Manual

Specification  
Nominal Basket Diameter  
Nominal Impedance  
Power Rating  
8-3/16", 209mm  
8-Ohms  
80 Watts  
Sound That Will Move You  
Resonance  
395Hz  
Usable Frequency Range  
Sensitivity  
Magnet Weight  
395Hz - 5kHz  
96.3 dB  
42.2 oz.  
Voice Coil Diameter  
1.5" 38.6mm  
Thiele & Small Parameters  
Resonant Frequency (fo)  
DC resistance (Re)  
Coil Inductance (Le)  
Mechanical Q (Qms)  
Electromagnetic Q (Qes)  
Total Q (Qts)  
395Hz ±15%  
6.5 Ohms  
367.888m mH  
3.896  
1.662  
1.165  
Compliance Equivalent Volume (Vas) .75 liters / .0624 cu.ft.  
Mechanical Compliance of Suspension (Cms) 11.806mm/N  
Earthquake EQ8S8 Pro Audio Series  
BL Product (BL)  
11.557 T-M  
12.001 grams  
1.6 mm  
Diaphragm Mass (Mmd)  
Maximum Linear Excursion (Xmax)  
Surface Area of Cone (Sd)  
dBSPL  
Ohm  
110  
100  
90  
50  
40  
211.241 cm  
Mounting Information  
30  
20  
Recommended Enclosure Volume  
Sealed  
Vented  
liters/ ft3  
liters/ ft3  
80  
Overall Diameter  
Cut Out Diameter  
Front Sealing Gasket  
Rear Sealing Gasket  
Mounting Holes Diameter  
Depth  
8 3/16", 209mm  
7 1/8", 181mm  
fitted as standard  
fitted as standard  
4-5.5 x 10mm  
2-15/16", 88mm  
70  
60  
50  
10  
9
8
7
40  
Materials of Construction  
Copper voice coil  
Polyimide former  
Ferrite magnet  
Vented and extended core  
Stamped steel basket  
Paper cone  
30  
6
20K  
20 Hz  
50  
100  
200  
500  
1K  
2K  
5K  
10K  
SPL vs Freq  
Earthquake Sound Corporation  
2727 McCone Avenue • Hayward, CA 94545 • phone: 800-576-7944  
Cloth surround  
Solid composition paper dust cap  
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