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RCF LF21N551 21" Neo Subwoofer Hoparlör, 2000/4000W, 4.5", 30-1000 Hz

  • Barcode: 2242005446843
  • Brand: RCF
  • Category: Woofer
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  • FEATURES
  • 4,5 - inch Inside/Outside copper voice coil
  • 3000 Watt continuous program power handling
  • 98.5 dB Sensitivity
  • 30 Hz - 1 kHz Frequency range
  • Dual-forced air ventilation for minimum power compression
  • Dual spider designed with silicon based damping control
  • BL of 34.5 Txm to provide a faster and accurate low frequency
  • GENERAL SPECIFICATIONS
  • Nominal Diameter:530 / 21 mm/inch
  • Rated Impedance:8 Ω
  • Program Power:3000 W AES
  • Power handling capacity:1500 W AES
  • Sensitivity:98.5 dB
  • Frequency Range:30 Hz ÷ 1000 Hz
  • Effective Piston Diameter:470 / 18.5 mm/inch
  • Max Excursion Before Damage (peak to peak):58 / 2.28 mm/inch
  • Minimum Impedance:7.1 Ω
  • Voice Coil Diameter:115 / 4.5 mm/inch
  • Voice Coil Material:Copper
  • Voice Coil Winding Depth:34 / 1.33 mm/inch
  • Number of layers:2
  • Kind of layer:inside / outside
  • Top Plate Thickness:15 / 0.6 mm/inch
  • Cone Material:No pressed pulp carbon fiber reinforced
  • Cone Design:Curved
  • Surround Material:Polycotton
  • Surround Design:Triple roll
  • THIELE/SMALL PARAMETERS
  • DC resistance:5.6Ω
  • Mechanical factor:6
  • Electrical factor:0.27
  • Total factor:0.26
  • BL Factor:34.5 T · m
  • Effective Moving Mass:315 g
  • Equivalent Cas air load:375 liters
  • Effettive piston area:0.173 m²
  • Max. linear excursion (mathematical):13.2 mm
  • Voice - coil inductance @ 1kHz:3.0 mH
  • Half-space efficiency:4.0%
  • MOUNTING INFORMATION
  • Overall Diameter:547 / 21.5 mm/inch
  • Bolt Circle Diameter:527 / 20.7 mm/inch
  • Bolt Hole Diameter:6.5 / 0.25 mm/inch
  • Front Mount Baffle Cut-out:512 / 20.1 mm/inch
  • Rear Mount Baffle Cut-out:512 / 20.1 mm/inch
  • Depth:250 / 9.8 mm/inch
  • Volume occupied by the driver:6.5 / 0.229 liters/ft³
  • Net Weight:10.9 / 24 kg/lbs
  • SHIPPING INFORMATION
  • Shipping weight:12.1 / 26.6 kg/lbs
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