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| [Eminence Sigma Pro 1] |
| Eminence Sigma Pro 18 |
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| SIGMA PRO 18A Professional Series
Recommended for professional audio as a woofer in vented enclosures.
SPECIFICATION
* Nominal Basket Diameter 18", 457.2 mm
* Nominal Impedance 8 ohms
* Power Rating Watts 650 W / Music Program 1300 W
* Resonance 28 Hz
* Usable Frequency Range 41 Hz - 2.4 kHz
* Sensitivity 99
* Magnet Weight 120 oz.
* Gap Height 0.375", 9.53 mm
* Voice Coil Diameter 3", 76.2 mm
THIELE & Small Parameters
* Resonant Frequency (fs) 28 Hz
* DC Resistance (Re) 6.29
* Coil Inductance (Le) 1.90 mH
* Mechanical Q (Qms) 8.28
* Electromagnetic Q (Qes) 0.30
* Total Q (Qts) 0.29
* Compliance Equivalent Volume (Vas) 441.2 liters / 15.6 cu. ft.
* Peak Diaphragm Displacement Volume 695 cc
* Mechanical Compliance of Suspension (Cms) 0.24 mm/N
* BL Product (BL) 22.1 T-M
* Diaphragm Mass inc. Airload (Mms) 130 grams
* Efficiency Bandwidth Product (EBP) 93
* Maximum Linear Excursion (Xmax) 6.1 mm
* Surface Area of Cone (Sd) 1140.0 cm²
* Maximum Mechanical Limit (Xlim) 18.0 mm
MOUNTING Information
* Recommended Enclosure Volume
Sealed N/A
Vented 93-212 liters/3.3-7.5 cu.ft.
* Overall Diameter 18", 457.2 mm
* Baffle Hole Diameter 16.56", 420.5 mm
* Front Sealing Gasket fitted as standard
* Rear Sealing Gasket fitted as standard
* Mounting Holes Diameter 0.28", 7.1 mm
* Mounting Holes B.C.D. 17.25", 438.2 mm
* Depth 8.15", 207 mm
MATERIALS of Construction
* Copper voice coil
* Polyimide former
* Ferrite magnet
* Vented and extended core
* Die-cast aluminum basket
* Paper Cone
* Cloth cone edge
* Solid composition paper dust cap |
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Drivers
