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CLEARANCE Eminence Kappa Pro 18LF-8 Professional Low Frequency Woofer 8 Ohm

Eminence SpeakerPart # 290-463
Model: KAPPA PRO 18LF-8
The Kappa Pro 18LF combines a low Fs, high excursion, and high efficiency making it ideal for high output low frequency systems. This driver will provide powerful output in compact subwoofers, large 3-ways, or even high power bass cabinets.

Key Features

  • 3" voice coil allows high power handling and reliable performance
  • Cast aluminum frame can withstand the use of a harsh pro sound environment
  • Large spider and accordion surround allow high linear excursion
  • Optimized for compact vented enclosures
  • Ideal upgrade for Mackie SRM1801 and Harbinger HX118S
  • Direct replacement for B-52 18-180L
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Overview

Eminence Kappa Pro 18LF-8 Professional Low Frequency Woofer 8 Ohm

Eminence's Kappa Pro 18LF provides tons of low frequency output in a lightweight, durable cast aluminum chassis. Use it as a subwoofer in small to medium sized boxes, a woofer in large 3-way PA enclosures, or as a high power bass guitar woofer. The 1,600 watt program power rating makes it an easy choice for new box designs or as a replacement for many single and double subwoofer cabinets.

Product Details

BrandEminence Speaker
ModelKAPPA PRO 18LF-8
Part Number290-463
UPC876358003730
Unit of MeasureEach
Weight26.1

Product Specifications

Nominal Diameter18"
Bolt Circle Diameter17.25
Power Handling (RMS)800 Watts
Power Handling (MAX)1600 Watts
Impedance
Frequency Response38 to 700Hz
Sensitivity98dB 2.83V/1m
Voice Coil Diameter3"

Thiele-Small Parameters

Resonant Frequency (Fs)32Hz
DC Resistance (Re)5.39Ω
Voice Coil Inductance (Le)1.21mH
Mechanical Q (Qms)10.66
Electromagnetic Q (Qes)0.34
Total Q (Qts)0.33
Compliance Equivalent Volume (Vas)13.83ft³
Mechanical Compliance of Suspension (Cms)0.21mm/N
BL Product (BL)19.39T·m
Diaphragm Mass Inc. Airload (Mms)119g
Maximum Linear Excursion (Xmax)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 Diameter16.58"
Depth8.15"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume2.86ft³
Sealed F377.5Hz
Vented Volume6ft³
Vented F338.4Hz

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