RCF LF18G400 18" Woofer Speaker

Brand:| Model: LF18G400
RCF's LF18G400 is an 18" woofer with linear frequency response characteristics and very high power handling.
  • 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
Part # 
Weight: 33.7 lbs.  
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List Price$509.00
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Part # 294-890
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Product Details

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 Specifications
  • Nominal Diameter18"
  • Power Handling (RMS)1000 Watts
  • Power Handling (max)2000 Watts
  • Impedance8 ohms
  • Frequency Response25 to 1,000 Hz
  • Sensitivity97.5 dB 2.83V/1m
  • Voice Coil Diameter4"
Thiele-Small Parameters
  • Resonant Frequency (Fs)28 Hz
  • DC Resistance (Re)5.1 ohms
  • Voice Coil Inductance (Le)2.5 mH
  • Mechanical Q (Qms)4.6
  • Electromagnetic Q (Qes)0.29
  • Total Q (Qts)0.27
  • Compliance Equivalent Volume (Vas)12.71 ft.³
  • BL Product (BL)24.2 Tm
  • Diaphragm Mass Inc. Airload (Mms)190g
  • Maximum Linear Excursion (Xmax)9 mm
  • Surface Area of Cone (Sd)1220 cm²
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
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume1.31 ft.³
  • Sealed F389 Hz
  • Vented Volume2.97 ft.³
  • Vented F357 Hz
RCF LF18G400 18" Woofer Speaker
  • BrandRCF USA
  • ModelLF18G400
  • Part Number294-890
  • UPC844632090257
  • Product CategoryWoofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Weight33.7 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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RCF LF18G400 18" Woofer Speaker

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RCF LF18G400 18" Woofer Speaker

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