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CLEARANCE RCF LF18G400 18" Woofer Speaker

RCF USA
Part #294-890

CLEARANCE RCF LF18G400 18" Woofer Speaker

RCF USA
Part #294-890  
Model: LF18G400
RCF's LF18G400 is an 18" woofer with linear frequency response characteristics and very high power handling.
Key Features
  • Remarkable linearity and power handling
  • 4" diameter inside/outside copper voice coil on fiberglass former
  • 2,000 watt continuous program power handling
  • 9 mm linear excursion, 50 mm peak to peak
  • Unique T-pole, curved on top, and 14 mm top plate for minimum power compression
  • Triple-roll surround and fiber-loaded corrugated straight cone geometry
  • Dual spider design with silicon-based damping control
60 Day No Hassle Return Policy

Overview

RCF LF18G400 18" Woofer Speaker

RCF's LF18G400 is an 18" woofer with linear frequency response characteristics and very high power handling. It uses a fiber-loaded cone assembly along with a high excursion triple roll, constant geometry surround. This combination provides remarkable strength and 2" peak to peak maximum excursion before damage. A uniquely shaped T-pole in the motor circuit and 14 mm thick top plate contribute to the driver's superior power handling and low compression. The LF18G400 is ideal for use in applications where incredible power handling, long excursion, and perfect control are required. The robust mechanical design and optimized weight of the device make it desirable for use in fixed installations or portable professional loudspeaker systems.

Product Details

BrandRCF USA
ModelLF18G400
Part Number294-890
UPC844632090257
Unit of MeasureEach
Weight33.7

Product Specifications

Nominal Diameter18"
Power Handling (RMS)1000 Watts
Power Handling (MAX)2000 Watts
Impedance8Ω
Frequency Response25 to 1,000Hz
Sensitivity97.5dB 2.83V/1m
Voice Coil Diameter4"

Thiele-Small Parameters

Resonant Frequency (Fs)28Hz
DC Resistance (Re)5.1Ω
Voice Coil Inductance (Le)2.5mH
Mechanical Q (Qms)4.6
Electromagnetic Q (Qes)0.29
Total Q (Qts)0.27
Compliance Equivalent Volume (Vas)12.71ft³
BL Product (BL)24.2T·m
Maximum Linear Excursion (Xmax)9mm
Surface Area of Cone (Sd)1220cm²

Materials of Construction

Cone MaterialPaper / Carbon Fiber
Surround MaterialCloth
Voice Coil Wire MaterialCopper
Voice Coil FormerFiberglass
Magnet MaterialFerrite

Mounting Information

Overall Outside Diameter18.3"
Baffle Cutout Diameter16.7"
Depth8.3"
# Mounting Holes8

Parts Express Staff Recommended Enclosure Volume

Sealed Volume1.31ft³
Sealed F389Hz
Vented Volume2.97ft³
Vented F357Hz

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