EMINENCE DELTAPRO18C 18-Inch Professional Series Speakers

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Price: $140.50 $119.46   

Product Feature

• Composition Solid composition paper dust cap
• Nominal Basket Diameter 18", 457mm
• Nominal Impedance 4 ohms

Product Description

Power Rating Watts 500W Music Program 1000W Resonance 27Hz Usable Frequency Range 35Hz -200Hz Sensitivity 94.4 Magnet Weight 67 ounce Gap Height 0.380", 9.53mm Voice Coil Diameter 2.5", 63.5mm THIELE and SMALL PARAMETERS Resonant Frequency (FS) 27Hz DC Resistance (Re) 3.8 Coil Inductance (Le) 2.65mH Mechanical Q (QMS) 13.24 Electromagnetic Q (QES) 0.32 Total Q (QTS) 0.32 Compliance Equivalent Volume (Vas) 488.8 liters / 17.26cu.ft. Peak Diaphragm Displacement Volume (VD) 796cc Mechanical Compliance of Suspension (CMS) 0.25mm/N BL Product (BL) 16.5 T-M Diaphragm Mass Inc. Air load (Mms) 137 grams Efficiency Bandwidth Product (EBP) 84 Maximum Linear Excursion (XMAX) 6.7mm Surface Area of Cone (SD) 1188.0 cm2 Maximum Mechanical Limit (XLIM) 15.0mm MOUNTING INFORMATION Recommended Enclosure Sealed Vented 85-283 liters/3.0-10.0 cu.ft. Overall Diameter 18.00", 457.2mm Baffle Hole Diameter 16.57", 420.9mm 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 8.13", 207mm Net Weight 17.0 lbs., 7.7 kg Shipping Weight 20.5 lbs., 9.3 kg MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Former Polyimide former Magnet Composition Ferrite magnet Core Details Vented and extended core Basket Materials Die-cast aluminum basket Cone Composition Paper cone Edge Composition Cloth cone edge Dust cap Composition Solid composition paper dust cap

EMINENCE DELTAPRO18C 18-Inch Professional Series Speakers Review

This thing ROCKS! With it's 6.7mm of xmax(excursion) this thing acts like an high efficient woofer. I have this woofer in a 6.1 Cuf3 cab, vented, tuned to 36hz and it sounds amazing! VERY clean, punchy, and plays all the way down. If you keep a steep lowpass around 30hz(to protect from over excursion), this thing WILL handle 300w+ all day long. The 4ohm impedance is REALLY nice for matching amplifiers. Having 4ohms instead of 8ohms really helps in getting more power from your amps. It helps to save you money, not having to buy larger power amps that will push a higher wattage at 8ohms.
As far as using it in a 'full range' setup, I have not tried, and it's really not designed for that. This is a true "subwoofer" and it's upper frequency roll off proves that.

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