Earthquake Sound EQ12S8 User Manual

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Specification

Nominal Basket Diameter

12-1/4", 310 mm

Nominal Impedance

8-Ohms

Max Power Rating

400 Watts

Resonance

319 Hz

Usable Frequency Range

280 Hz - 6 kHz

Sensitivity

97 dB (2.83V/1M)

Magnet Weight

50 oz.

Voice Coil Diameter

1.97”, 50 mm

Thiele & Small Parameters

Resonant Frequency (Fs)

319 Hz

DC resistance (Re)

6.8 Ohms

Coil Inductance at Fs (Lces)

1.179 mH

Mechanical Q (Qms)

5.72

Electromagnetic Q (Qes)

2.88

Total Q (Qts)

1.91

Compliance Equivalent Volume (Vas)

--

Mechanical Compliance of Suspension (Cms)

--

BL Product (BL)

--

Diaphragm Mass (Mmd)

--

Maximum Linear Excursion (Xmax)

4.0mm

Surface Area of Cone (Sd)

--

Mounting Information

Recommended Enclosure Volume

Sealed

 

Vented

1.0-2.1 ft3, 28.3-59.5 liters

Overall Diameter

12-1/4”, 310 mm

Cut Out Diameter

11-1/16”, 281 mm

Front Sealing Gasket

fitted as standard

Rear Sealing Gasket

fitted as standard

Mounting Holes Diameter

5/16” x 3/8” , 7 mm x 9 mm

Mounting Depth

4-9/16”, 116 mm

Materials of Construction

Aluminum voice coil

Polyimide former

Ferrite magnet

Vented and extended core

Stamped steel basket

Paper cone

Cloth surround

Solid composition paper dust cap

Sound That Will Move You.

Earthquake EQ12S8 Pro Audio Series

Earthquake Sound Corporation

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