Eminence OMEGAPRO18A 18In Raw Frame Pro Speaker

Write a review Q&A SKU: OMEGA-P-18-A PSSL ID#: 35033
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Eminence OMEGAPRO18A 18-Inch Raw Frame Pro Speaker

The OMEGA PRO-18A is recommended for professional audio as a woofer in vented enclosures and is also ideal for horn loading and scoops. Each Eminence Professional model can be identified by its cast aluminum Eminence chassis that is lightweight and strong. Aluminum does not conduct the magnetic field out of the gap, thereby making the motor strength higher and the stray magnetic field lower. Eminence coats each of their chassis and all metal components with an epoxy-acrylic finish using an in-house e-coat process.

  • Nominal basket diameter: 18"/457 mm
  • Nominal impedance: 8 O
  • Power rating: 800W/program power 1600 W
  • Resonance: 25 Hz
  • Usable frequency range: 40 Hz - 0.8 kHz
  • Sensitivity: 97 dB
  • Magnet weight: 109 oz.
  • Gap height: 0.37"/9.5 mm
  • Voice coil diameter: 4"/102 mm
Thiele and small parameters
  • Resonant frequency (fs): 25 Hz
  • DC resistance (Re): 5.2 O
  • Coil inductance (Le): 1.67m H
  • Mechanical Q (Qms): 8.18
  • Electromagnetic Q (Qes): 0.32
  • Total Q (Qts): 0.31
  • Compliance equivalent volume (Vas):548.7 liters / 19.38 cu.ft.
  • Peak diaphragm displacement volume: (Vd) 556 cc
  • Mechanical compliance of suspension (Cms): 0.29 mm/N
  • BL product (BL): 18.8 T-M
  • Diaphragm mass inc. airload (MMs): 137 grams
  • Efficiency bandwidth product (EBP):79
  • Maximum linear excursion (Xmax): 4.8 mm
  • Surface area of cone (Sd): 1159 cm2
  • Maximum mechanical limit(Xlim):16 mm
Mounting information
  • Recommended enclosure volume: vented 96-198 liters / 3.4-7 cu.ft.
  • Driver volume displaced: 0.234 cu.ft. / 6.62 liters
  • Overall diameter: 18"/457.2 mm
  • Baffle hole diameter: 16.56"/420.6 mm
  • Front sealing gasket: Yes
  • Rear sealing gasket: Yes
  • Mounting holes diameter: 0.28"/7.1mm
  • Mounting holes B.C.D.: 17.25"/438.2mm
  • Depth: 8.15"/207 mm
  • Weight: 25.2 Lbs./11.43 kg
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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