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Eminence DELTAPRO18A 18In Rawframe Speaker

Eminence DELTAPRO18A 18In Rawframe Speaker

Eminence DELTAPRO18A 18In Rawframe Speaker

Item #78480
(0 Reviews)
List Price: $229.99
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Eminence DELTAPRO18A 18" Rawframe Speaker

Long throw subwoofer for very small vented boxes. Over-sized top plate and large pole vent help keep the coil cool.

  • Nominal Basket Diameter: 18", 457mm
  • Nominal Impedance: 8 ohms
  • Power Rating: Watts: 500W; Music Program: 1000W
  • Resonance: 28Hz
  • Usable Frequency Range: 37Hz - 0.25kHz
  • Sensitivity: 96dB
  • Magnet Weight: 67 oz.
  • Gap Height: 0.38", 9.53mm
  • Voice Coil Diameter: 2.5", 63.5mm
Thiele & Small Parameters
  • Resonant Frequency (fs): 28Hz
  • DC Resistance (Re): 5.3
  • Coil Inductance (Le): 3.43mH
  • Mechanical Q (Qms): 10.38
  • Electromagnetic Q (Qes): 0.33
  • Total Q (Qts): 0.32
  • Compliance Equivalent Volume (Vas): 493.2 liters / 17.41 cu.ft.
  • Peak Diaphragm Displacement Volume (Vd): 796cc
  • Mechanical Compliance of Suspension (Cms): 0.25mm/N
  • BL Product (BL): 18.9 T-M
  • Diaphragm Mass Inc. Airload (MMs): 128 grams
  • Efficiency Bandwidth Product (EBP): 84
  • Maximum Linear Excursion (Xmax): 6.7mm
  • Surface Area of Cone (Sd): 1188 cm2
  • Maximum Mechanical Limit (Xlim): 15mm
Mounting Information
  • Recommended Enclosure Volume: Sealed: N/a; Vented: 85-297 liters / 3-10.5 cu.ft.
  • Driver Volume Displaced: 367 cu.in. / 6.01 liters
  • Overall Diameter: 18", 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 lbs, 7.7 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 and extended core
  • Basket Materials: Die-cast aluminum basket
  • Cone Composition: Paper cone
  • Cone Edge Composition: Cloth cone edge
  • Dust Cap Composition: Solid composition paper dust cap
… [ More ]
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