EMINENCE DELTAPRO18C

18-in 500W RMS to MAX 1000W 2.5-in Voice Coil Diameter 4 Ohms Impedance Ferrite Magnet
SKU: DELTAPRO18C
Availability: Out of stock

This table charts the specifications for the DELTA PRO-18C speaker
* Nominal Basket Diameter: 18-in , 457 mm.
* Nominal Impedance: 4 Ohms.
* Power Rating:
* Watts: 500 W.
* Music Program: 1000 W.
* Resonance: 27 Hz.
* Usable Frequency Range: 35 Hz - 0.2 kHz.
* Sensitivity: 94.4 dB.
* Magnet Weight: 67 oz..
* Gap Height: 0.38-in , 9.7 mm.
* Voice Coil Diameter: 2.5-in , 64 mm.
* Thiele & Small Parameters.
* Resonant Frequency (fs): 27 Hz.
* DC Resistance (Re): 3.8 Ohms.
* Coil Inductance (Le): 2.65m H.
* Mechanical Q (Qms): 13.24.
* Electromagnetic Q (Qes): 0.32.
* Total Q (Qts): 0.32.
* Compliance Equivalent Volume (Vas): 488.8 liters / 17.26 cu.ft..
* Peak Diaphragm Displacement Volume (Vd): 796 cc.
* Mechanical Compliance of Suspension (Cms): 0.25 mm/N.
* BL Product (BL): 16.5 T-M.
* Diaphragm Mass Inc.
Airload (MMs): 137 grams.
* Efficiency Bandwidth Product (EBP): 84.
* Maximum Linear Excursion (Xmax): 6.7 mm.
* Surface Area of Cone (Sd): 1188 cm2.
* Maximum Mechanical Limit (Xlim): 15 mm.
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Recommended Enclosure Volume;
* Sealed: N/a.
* Vented: 85-283 liters / 3-10 cu.ft..
* Driver Volume Displaced: 0.212 cu.ft.
/ 6.01 liters.
* Overall Diameter: 18-in , 457.2 mm.
* Baffle Hole Diameter: 16.57-in , 420.9 mm.
* Front Sealing Gasket: Yes.
* Rear Sealing Gasket: Yes.
* Mounting Holes Diameter: 0.28-in , 7.1mm.
* Mounting Holes B.C.D.: 17.25-in , 438.2mm.
* Depth: 8.13-in , 206.5 mm.
* Net Weight: 17 lbs, 7.71 kg.
* Shipping Weight: 20.5 lbs, 9.3 kgs.
* Materials of Construction.
* Coil Construction: Copper voice coil.
* Coil Former: Polyimide former.
* Magnet Composition: Ferrite magnet.
* Core Details: Vented & extended core.
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* Basket Materials: Die-cast aluminum basket.
* Cone Composition: Paper cone.
* Cone Edge Composition: Cloth cone edge.
* Dust Cap Composition: Solid composition paper dust cap.

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