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This item must be exchanged directly through the manufacturer if it is found to be defective, and can only be returned to us if it is unopened.
Payment Options We DO NOT COLLECT TAX except on orders shipped to New Jersey.
The Eminence DP18 is a long throw subwoofer for very small vented boxes. Over-size top plate and large pole vent help keep the coil cool.
Nominal Basket Diameter: 18 in., 457 mm
Nominal Impedance*: 4 or 8 ohms
Power Rating**: 500 Watts
Music Program: 1000 Watts
Resonance: 28Hz
Usable Frequency Range***: 37Hz-250Hz
Sensitivity: 96dB
Magnet Weight: 67 oz
Gap Height: .38 in.,9.53 mm
Voice Coil Diameter: 2.5 in., 63.5 mm
Thiele and Small Parameters
Resonant Frequency (fs): 28Hz
DC Resistance (Re): 5.3
Coil Inductance (Le): 3.43mH
Mechanical Q (Qms): 10.38
Electromagnetic Q (Qes): .33
Total Q (Qts): .32
Compliance Equivalent Volume (Vas): 493.19 ltr/17.41 cu. ft.
Peak Diaphragm Displacement Volume (Vd): 796.00cc
Mechanical Compliance of Suspension (Cms): .25mm/N
BL Product (BL): 18.9 T-M
Diaphragm Mass inc. Airload (Mms): 128.1 grams
Efficiency Bandwidth Product (EBP): 84
Maximum Linear Excursion (Xmax): 6.7mm
Surface Area of Cone (Sd): 1188.0cm
Maximum Mechanical Limit (Xlim): 15.0m
Mounting Information
Recommended Enclosure Volume:
- Sealed: N/A
- Vented: 85-297 ltr/3.0-10.5 cu. ft.
Overall Diameter: 18.00 in., 457.20 mm
Baffle Hole Diameter: 16.57 in., 420.88 mm
Front Sealing Gasket: Fitted as Standard
Rear Sealing Gasket: Fitted as Standard
Mounting Holes Diameter: .28 in., 7.11 mm
Mounting Holes B.C.D.: 17.25 in., 438.15mm
Depth: 8.13 in., 206.50mm
Net Weight: 17.00 lbs, 7.71 kg
Shipping Weight: 20.5 lbs, 9.3 kg
Materials of Construction
Coil Construction: Copper
Coil: Polyimide
Magnet Composition: Ferrite
Core Details: Vented and Extended
Basket Materials: Die-Cast Aluminum
Cone Composition: Paper
Cone Edge Composition: Cloth
Dust Cap Composition: Solid Composition Paper
* Please inquire about alternative impedances.
** Multiple units exceed published rating evaluated under EIA 426A noise source and test standard while in a free-air, nontemperature-controlled environment.
*** The average output across the usable frequency range when applying 1W/1m into the nominal impedance. Ie: 2.83 V/8 ohms, 4 V/16 ohms.
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