Eminence SIGMAPRO 18" Woofer 8-ohms

SKU: SIGMAPRO18A2

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Eminence

SPECIFICATION Nominal Basket Diameter 18", 457.2mmNominal impedance 8 ohmsPower Rating Watts 650WMusic Program 1300WResonance 28HzUsable Frequency Range 41Hz-2.4kHzSensitivity 99Magnet Weight 120 oz.Gap Height 0.375", 9.53mmVoice Coil Diameter 3", 76.2mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 28HzDC Resistance (Re) 6.29Coil Inductance (Le) 1.90mHMechanical Q (Qms) 8.28Electromagnetic Q (Qes) 0.30Total Q...
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SPECIFICATION Nominal Basket Diameter 18", 457.2mmNominal impedance 8 ohmsPower Rating Watts 650WMusic Program 1300WResonance 28HzUsable Frequency Range 41Hz-2.4kHzSensitivity 99Magnet Weight 120 oz.Gap Height 0.375", 9.53mmVoice Coil Diameter 3", 76.2mm THIELE & SMALL PARAMETERS Resonant Frequency (fs) 28HzDC Resistance (Re) 6.29Coil Inductance (Le) 1.90mHMechanical Q (Qms) 8.28Electromagnetic Q (Qes) 0.30Total Q (Qts) 0.29Compliance Equivalent Volume (Vas) 441.2 liters / 15.6 cu.ft.Peak Diaphragm Displacement Volume (Vd) 695ccMechanical Compliance of Suspension (Cms) 0.24mm/NBL Product (BL) 22.1 T-MDiaphram Mass inc. Airload (Mms) 130 gramsEfficiency Bandwidth Product (EBP) 93Maximum Linear Excursion (Xmax) 6.1mmSurface Area of Cone (Sd) 1140.0 cm2 Maximum Mechanical Limit (Xlim) 18.0mm MOUNTING INFORMATION Recommended Enclosure Sealed Vented 93-212 liters/3.3-7.5 cu.ft. Overall Diameter 18", 457.2mm Baffle Hole Diameter 16.56", 420.5mm Front Sealing Gasket fitted as standard Rear Sealing Gasket fitted as standard Mounting Holes Diameter 0.28", 7.1mm Mounting Holes B.C. D. 17.25", 438.2mm Depth 8.15", 207mm Net Weight 24.5 lbs., 11.1 kg Shipping Weight 28.1 lbs., 12.8 kg MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Coil Former Polyimide former Magnet Composition Ferrite magnet Core Details Vented and extended core Basket Materials Die-cast aluminum basket Cone Composition Paper Cone Cone Edge Composition Cloth cone edge Dustcap Composition Solid composition paper dust cap

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