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Eminence Definimax 4018LF 18" Speaker Driver

Brand:| Model: Definimax 4018LF
Overview
The Eminence Definimax 4018LF 18" driver is recommended for professional audio and bass as a low distortion subwoofer in single or multi-driver speaker designs.
A restocked/refurbished, or Open Box unit of the product is available -- see it now
Highlights
  • Copper voice coil with Polyimide former
  • Ferrite magnet
  • Undercut pole piece with copper shorting ring and Core Periphery Ventilation
  • Die-cast aluminum basket
  • Acrylic wetlook paper cone and dust cap
  • Cloth cone edge
Part # 
290-579
Weight: 29 lbs.  
IN STOCK
Your Price
$259.99
Eminence Baseball Cap
Qty: 1Part # 520-300
List Price:$19.99
Part # 290-579
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Product Details

Eminence Definimax 4018LF 18" Speaker Driver

The Eminence Definimax 4018LF 18" driver is recommended for professional audio and bass as a low distortion subwoofer in single or multi-driver speaker designs.



Product Specifications
  • Nominal Diameter18"
  • Power Handling (RMS)800 Watts
  • Power Handling (max)1600 Watts
  • Impedance8 ohms
  • Frequency Response36 to 200 Hz
  • Sensitivity95 dB 1W/1m
  • Voice Coil Diameter4"
  • Magnet Weight109 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)32 Hz
  • DC Resistance (Re)6.19 ohms
  • Voice Coil Inductance (Le)4.78 mH
  • Mechanical Q (Qms)10.38
  • Electromagnetic Q (Qes)0.36
  • Total Q (Qts)0.35
  • Compliance Equivalent Volume (Vas)8.4 ft.³
  • Mechanical Compliance of Suspension (Cms)0.12 mm/N
  • BL Product (BL)27 Tm
  • Diaphragm Mass Inc. Airload (Mms)211g
  • Maximum Linear Excursion (Xmax)7.9 mm
  • Surface Area of Cone (Sd)1188 cm²
Materials of Construction
  • Cone MaterialCoated Paper
  • Surround MaterialCloth
  • Voice Coil Wire MaterialCopper
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialCast Aluminum
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter18"
  • Baffle Cutout Diameter16.57"
  • Depth8.13"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume1.56 ft.³
  • Sealed F378 Hz
  • Vented Volume4.1 ft.³
  • Vented F347 Hz
Eminence Definimax 4018LF 18" Speaker Driver
  • BrandEminence Speaker
  • ModelDefinimax 4018LF
  • Part Number290-579
  • UPC876358000579
  • Product CategoryWoofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Product Rating
    (2 Reviews)
  • Weight29 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.

View similar products to the Eminence Definimax 4018LF 18" Speaker Driver
in the Woofers, Subwoofers & Midrange Speakers product category.

Reviews

Eminence Definimax 4018LF 18" Speaker Driver
Eminence Definimax 4018LF 18" Speaker Driver is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Excelent PA wooferI used this woofer in a large PA set of speakers for a local private School, they are in a large cabinet ported. Great response and power handeling. They work well.
Date published: 2011-05-20
Rated 5 out of 5 by from This Driver is WickedI have two of these driven by a crown XS-1200 bridged. They are loaded in the large dance club style enclosure (as specified by eminence). I play recorded dance music as a DJ, and these are the only subs I have found that don't roll off around 60hz in a front loaded box. I am impressed with output and response in the real world with these.
Date published: 2007-07-23

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Eminence Definimax 4018LF 18" Speaker Driver

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