Eminence Delta Pro-18A 18" Cast Frame Speaker, 8 Ohm

PA SKU # EMN DELTAPRO18A MFR # DELTA PRO-18A UPC # 876358001026
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  • 18" Cast Frame Driver, 8 Ohm, 500 Watt

18" Cast Frame Driver, 8 Ohm, 500 Watt

Eminence's Delta Pro-18A 18" speaker provides plenty of deep, clean bass output, making it perfect for compact bass guitar cabinets and PA bass bins. Its oversize top plate and large pole vent help keep the voice coil cool. Recommended enclosure size: 3.0-10.0 cu. ft.
  • Ferrite magnet
  • Die-cast aluminum basket
  • High power handling and efficiency
  • Works great in smaller enclosures
  • SPECIFICATION
  • 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
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