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Specification

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

6-5/8", 169.5mm

8-Ohms

60 Watts

377Hz

377Hz - 5kHz

93.2

37.8 oz.

1 3/8", 30.5mm

Thiele & Small Parameters

Resonant Frequency (fs)
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)

377.331Hz ±15%

6.5 Ohms

278.353mH @ 1kHz

4.122
1.720
1.214

436.075mLtr/0.015 ft3

16.905mm/N

9.711 T-M

9.624 grams

0.2mm

134.782 sqM

Mounting Information

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

6-5/8", 169.5mm

5-5/8", 142mm

fitted as standard
fitted as standard

0.27" x 0.21" , 7.0mm x 5.5mm

2-7/8", 71.7mm

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

 EQ6S8 Pro Audio Series

20  Hz

50

100

200

500

1K

2K

5K

10K

20K

dBSPL

30

40

50

60

70

80

90

100

110

 Ohm

6

7

8

9

10

20

30

40

Sound That Will 

Move

 You

Earthquake Sound Corporation
2727 McCone Avenue • Hayward, CA 94545 • phone: 800-576-7944
fax: 510-732-1095 • www.earthquakesound.com

SPL vs Freq

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