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RCF LF18G401 18 in. Woofer with Linear Frequency Response Cheracteristics

product price: $427.99
/ea
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Product Information

Description

The LF18G401 uses a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround.
This combination provides remarkable strength and peak to peak maximum excursion of 50mm.
The LF18G401 is ideal for use in applications where incredible power handling, long excursion and perfect control is required.
Ideal for high quality professional bass reflex and bass-horn system.
The robust machanical design and optimised weight of the device make it desiderable for use in fixed installation or portable professional loudspeaker system.
  • 4", fiberglass inside/outside copper voice coil.
  • 1800W continuous program power handling.
  • 98 dB Sensitivity.
  • 30 Hz - 1 kHz Frequency range.
  • Dual spider design with silicon based dampening control.
  • Triple-roll surround and corrugated straight cone geometry.
  • 460 / 18.
  • Rated Impedance: 8 O.
  • Program Power: 1800 W AES.
  • Power handling capacity: 900 W AES.
  • Sensitivity: 98 dB.
  • Frequency Range: 30 Hz ÷ 1000 Hz.
  • Effective Piston Diameter: 395 mm/ 15.6".
  • Max Excursion Before Damage (peak to peak): 50 mm/ 2.0".
  • Minimum Impedance: 5.9 O.
  • Voice Coil Diameter: 100 mm/ 4".
  • Voice Coil Material: Copper.
  • Voice Coil Winding Depth: 23 mm/ 0.9".
  • Number of layers: 2.
  • Kind of layer: inside / outside.
  • Top Plate Thickness: 12 mm/ 0.5".
  • Cone Material: No pressed pulp.
  • Cone Design: Straight.
  • Surround Material: Polycotton.
  • Surround Design: Triple roll.
    Thiele/Small Parameters:
  • DC resistance: 4.8O.
  • Mechanical factor: 7.6.
  • Electrical factor: 0.30.
  • Total factor: 0.29.
  • BL Factor: 24.6 T · m.
  • Effective Moving Mass: 182 g.
  • Equivalent Cas air load: 268 liters.
  • Effettive piston area: 0.122 m2.
  • Max. linear excursion (mathematical): 8.5 mm.
  • Voice - coil inductance 1kHz: 2.4 mH.
  • Half-space efficiency: 3.09%.
    Mounting information:
  • Overall Diameter: 465 mm/ 18.3".
  • Bolt Circle Diameter: 442 - 447 mm/ 17.4" - 17.6".
  • Bolt Hole Diameter: 6.5 mm/ 0.3".
  • Front Mount Baffle Cut-out: 424 mm/ 16.7".
  • Rear Mount Baffle Cut-out: 424 mm/ 16.7".
  • Depth: 205 mm/ 8.1".
  • Volume occupied by the driver: 7.0 / 0.25 liters/ft3.

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