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Eminence Sigma Pro-18A-2 18" Cast Frame Driver

Brand:|Model: Sigma Pro-18A-2|Part # 290-427


Eminence's Sigma Pro-18A-2 18" cast frame speaker performs superbly in moderately-sized professional PA subwoofer loudspeaker systems.
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Regular Price$174.99
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Eminence Baseball Cap
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*Domestic US orders only
Part # 290-427
Highlights
  • Copper voice coil on polyimide former
  • Die-cast aluminum basket
  • Vented and extended pole piece
  • Paper cone with cloth cone edge
  • Great replacement for the Dayton Audio PF460-8 18" Cast Frame Driver 4" VC




Product Details

Eminence Sigma Pro-18A-2 18" Cast Frame Driver

The Eminence Sigma Pro-18A-2 18" cast frame speaker is recommended for professional audio as a woofer or subwoofer in vented enclosures. It has been engineered for durability as well as exceptional sound quality, and will serve well when loaded into high-output live sound or music playback systems. Made in the USA. 7-year manufacturer's warranty!



Product Specifications
  • Nominal Diameter18"
  • Power Handling (RMS)650 Watts
  • Power Handling (max)1300 Watts
  • Impedance8 ohms
  • Frequency Response41 to 2,400 Hz
  • Sensitivity99 dB 1W/1m
  • Voice Coil Diameter3"
  • Magnet Weight120 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)28 Hz
  • DC Resistance (Re)6.29 ohms
  • Voice Coil Inductance (Le)1.90 mH
  • Mechanical Q (Qms)8.28
  • Electromagnetic Q (Qes)0.30
  • Total Q (Qts)0.29
  • Compliance Equivalent Volume (Vas)15.58 ft.³
  • Mechanical Compliance of Suspension (Cms)0.24 mm/N
  • BL Product (BL)22.1 Tm
  • Diaphragm Mass Inc. Airload (Mms)130g
  • Maximum Linear Excursion (Xmax)6.1 mm
  • Surface Area of Cone (Sd)1,140 cm²
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
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume1.87 ft.³
  • Sealed F383 Hz
  • Vented Volume4.33 ft.³
  • Vented F353 Hz
Eminence Sigma Pro-18A-2 18" Cast Frame Driver
  • BrandEminence Speaker
  • ModelSigma Pro-18A-2
  • Part Number290-427
  • UPC876358000395
  • Product CategoryPro Woofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Product Rating
    (19 Reviews)
  • Weight27.9 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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Eminence Sigma Pro-18A-2 18" Cast Frame Driver

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Eminence Sigma Pro-18A-2 18" Cast Frame Driver

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