RCF LF21N451 - 21 inch 1500W 8 Ohm
COOKIES: Our website uses cookies in order to provide a better online experience, this is essential for use of the shopping basket, and to login to our website. We require your consent to use cookies in order to meet relevant regulations. Please CLICK HERE to indicate your consent and continue using our website. We do not use third party tracking cookies on our website, cookies are used for this site's functionality only.
RCF
RCF LF21N451 - 21" 1500W 8 Ohm
SPL: 98.5dB Fs: 30Hz Xmax: 13.2mm
 
Product Code: RCFLF21N451 | Brand:
RCF LF21N451 - 21 inch 1500W 8 Ohm
£515.34
£429.45 ex VAT
2-3 £496.49 ea.4-7 £491.45 ea.8+ £483.89 ea.
Login to see JAM Club pricing
Not a member? Join Now
£8.22 DELIVERY to mainland UK.
RCF LF21N451 - 21" 1500W 8 Ohm

The LF21N451 is a very high power handling and efficiency transducer specially designed to provide powerful and accurate sub-bass frequencies with low distortion and low power compression.

The height of the voice coil has been specifically designed to improve the excursion and linearity at very low frequencies.
The LF21N451 uses a special RCF developed carbon fibre + nylon + cellulose composite pulp which reinforces and improves the rigidity of the cone structure.
The new pulp and the large triple roll surround along double silicon spider system ensure excellent control and makes the cone resistant to deformation caused by very large displacements and pressure created by the transducer’s high excursion behaviour.
A fully optimised 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.
 

Applications:

The LF21N451 is ideal in applications where light weight,very high BL and power handling are required.
Its especially used for tourimg,perfect for powerful lows in horn loaded sub bass system or reflex designs.

Main 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 Ohms
  • 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 mm / 18.5 inch
  • Max Excursion Before Damage (peak to peak): 58 mm / 2.28 inch
  • Minimum Impedance: 7.1 Ohms
  • Voice Coil Diameter: 115 mm / 4.5 inch
  • Voice Coil Material: Copper
  • Voice Coil Winding Depth: 34 mm / 1.33 inch
  • Number of layers: 2
  • Kind of layer: inside / outside
  • Top Plate Thickness: 15 mm / 0.6 inch
  • Cone Material: No pressed pulp carbon fiber reinforced
  • Cone Design: Curved
  • Surround Material: Polycotton
  • Surround Design: Triple roll

Thiele/Small Parameters


  • DC resistance: 5.6 Ohms
  • 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 mm / 21.5 inch
  • Bolt Circle Diameter: 527 mm / 20.7 inch
  • Bolt Hole Diameter: 6.5 mm / 0.25 inch
  • Front Mount Baffle Cut-out: 512 mm / 20.1 inch
  • Rear Mount Baffle Cut-out: 512 mm / 20.1 inch
  • Depth: 250 mm / 9.8 inch
  • Volume occupied by the driver: 6.5 litres / 0.229 ft³
  • Net Weight: 10.9 kg / 24 lbs
Other RCF products similar to RCF LF21N451 - 21" 1500W 8 Ohm:
RCF LF21X451 - 21" 2000W 8 Ohm

£458.44 inc VAT
(£382.03 ex VAT)

UK & ROI
Delivery Info for RCF LF21N451 - 21 inch 1500W 8 Ohm  to locations within the United Kingdom and Ireland
EUROPE
Delivery Info for RCF LF21N451 - 21 inch 1500W 8 Ohm  to locations in Europe
SEARCH results for other drivers with similar T-S Parameters to RCF LF21N451 - 21" 1500W 8 Ohm