Genuine Eminence

SIGMA PRO-18-4 - 18" WOOFER

THE EMINENCER SIGMA PRO-18-4 HAS GOOD CLEAN BASS DOWN TO 32HZ, IS 4 OHMS, HAS A 7.0MM XMAX & IS AFFORDABLY PRICED!

Eminence Sigma Pro-18-4Eminence Sigma Pro 18-4-4

Item Price: $174.99

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WOOFER MODEL SIGMA PRO-18-4

Specifications

Nominal Basket Diameter 18" / 457.2mm
Impedance 4 ohms
RMS Power Rating 700 Watts
Program Power Handling 1,400 Watts
Frequency Response 32Hz - 2.0kHz
Sensitivity (1W/1m) 97.6dB
Voice Coil Diameter 3" / 76.2mm
Max. Crossover Frequency 2.0kHz
Rec. Enclosure Volume(Vented) 3.0 - 7.5cu. ft./84.95 - 212.38 Liters

Mounting Information

Overall Diameter 18" / 457.2mm
Bolt Circle Diameter 17.25" / 438.2mm
Baffle Cutout Diameter 16.56" / 420.5mm
No. Of Mounting Holes 8
Mounting Hole Diameter 0.275" / 7mm
Overall Depth 8.15" / 207mm
Magnet Weight 120 oz.
Net Weight 24.5 lbs. / 11.11kg.
Shipping Weight 28.1 lbs. / 12.8kg.

Thiele-Small Parameters

Resonant Frequency (fs) 32 Hz
Impedance (Re) 3.35 ohms
Coil Inductance (Le) .85mH
Electromagnetic Q (Qes) .3
Mechanical Q (Qms) 14.79
Total Q (Qts) .29
Compliance Equivalent Vol. (Vas) 360.84 Liters/12.74cu. ft.
Voice Coil Overhang (Xmax) 7.0mm
BL Factor (BL) 16.54 T-M
Surface Area of Cone (Sd) .1140 m2

SIGMA PRO-18-4 RESPONSE CURVE

Eminence Sigma Pro-18-4

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