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Eminence Omega Pro-18A 18" Cast Frame Woofer

Eminence SpeakerPart # 290-428
Model: Omega Pro-18A
Eminence's Omega Pro-18A 18" cast frame speaker is recommended for professional audio of all types, and will provide great results as a high-power subwoofer for PA and dance systems.

Key Features

  • Two-layer, 27ga. copper voice coil with Kapton® coil former
  • Vented and extended pole piece
  • Die-cast aluminum basket
  • Paper cone with cloth cone edge
  • Solid composition paper dust cap
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Overview

Eminence Omega Pro-18A 18" Cast Frame Woofer

The Eminence Omega Pro-18A 18" cast frame speaker is equipped with a large 4" diameter voice coil and a 109 oz. ceramic ferrite magnet with bumped back plate. The Omega Pro-18A is an ideal driver choice for vented subwoofer enclosures as well as horn loading and scoops. Made in the USA. 7-year manufacturer's warranty!

Product Details

BrandEminence Speaker
ModelOmega Pro-18A
Part Number290-428
UPC876358000425
Unit of MeasureEach
Weight28.05

Product Specifications

Nominal Diameter18"
Power Handling (RMS)800 Watts
Power Handling (MAX)1600 Watts
Impedance
Frequency Response40 to 800Hz
Sensitivity97dB 2.83V/1m
Voice Coil Diameter4"

Thiele-Small Parameters

Resonant Frequency (Fs)25Hz
DC Resistance (Re)5.2Ω
Voice Coil Inductance (Le)1.67mH
Mechanical Q (Qms)8.18
Electromagnetic Q (Qes)0.32
Total Q (Qts)0.31
Compliance Equivalent Volume (Vas)19.38ft³
Mechanical Compliance of Suspension (Cms)0.29mm/N
BL Product (BL)18.8T·m
Diaphragm Mass Inc. Airload (Mms)137g
Maximum Linear Excursion (Xmax)4.8mm
Surface Area of Cone (Sd)1159cm²

Materials of Construction

Cone MaterialPaper
Surround MaterialCloth
Voice Coil Wire MaterialCopper
Voice Coil FormerKapton® / Polyimide
Basket / Frame MaterialCast Aluminum
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter18"
Baffle Cutout Diameter16.56"
Depth8.15"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume3.5ft³
Sealed F364.5Hz
Vented Volume7ft³
Vented F332.7Hz

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