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RCF LF21N401

Subwoofer 1500W RMS, 21" – Spedizione GRATIS!

Product code: LF21N401
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The LF21N401 is a high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression.

With a fast time response, the LF21N451 uses a fiber loaded cone assembly along a large triple roll surround. This combination provides emarkable strength and control.

Double silicon spider system ensures excellent control during large excursions. A fully optimized T-pole design generate the minimum amount of flux modulation.

The Dual-forced air venting system provides a very efficient voice coil ventilation to minimize the power compression.




  • Nominal Diameter:530mm / 21"
  • Rated Impedance:8 Ω
  • Program Power:3000 W AES
  • Power handling capacity:1500 W AES
  • Sensitivity:98 dB
  • Frequency Range:25 Hz ÷ 1000 Hz
  • Effective Piston Diameter:470mm
  • Max Excursion Before Damage (peak to peak):60mm
  • Minimum Impedance:6.9 Ω
  • Voice Coil Diameter:100mm
  • Voice Coil Material:Copper
  • Voice Coil Winding Depth:31mm
  • Number of layers:2
  • Kind of layer:inside / outside
  • Top Plate Thickness:15mm
  • Cone Material:No pressed pulp carbon fiber reinforced
  • Cone Design:Curved
  • Surround Material:Polycotton
  • Surround Design:Triple roll
  • Resonance frequency:30 Hz
  • DC resistance:5.0Ω
  • Mechanical factor:6.8
  • Electrical factor:0.40
  • Total factor:0.37
  • BL Factor:27.6 T · m
  • Effective Moving Mass:434318 g
  • Equivalent Cas air load:374 liters
  • Effettive piston area:0.122 m²
  • Max. linear excursion (mathematical):11.4 mm
  • Voice - coil inductance @ 1kHz:1.7 mH
  • Half-space efficiency:2.50%
  • Overall Diameter:547mm
  • Bolt Circle Diameter:527mm
  • Bolt Hole Diameter:6.5m
  • Front Mount Baffle Cut-out:512mm
  • Rear Mount Baffle Cut-out:512mm
  • Depth:219mm
  • Volume occupied by the driver:6.5liters
  • Net Weight:8.8 kg

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