LF21N451
WOOFER
  • 4,5 - inch Inside/Outside copper voice coil
  • 3000 Watt continuous program power handling
  • 98.5 dB Sensitivity
  • 30 Hz - 1 kHz Frequency range
  • 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
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.

Código de Artículo:

  • 11100043
    LF21N451
    8ohm
Especificaciones
Especificaciones generales
Impedancia mínima:
21 inch / 533 mm
Impedancia nominal:
8 ohm
Potencia de programa:
3000 W
Capacidad de control de potencia:
1500 W
Sensibilidad:
98 dB
Gama de frecuencias:
30 - 1000 Hz
Diámetro de pistón útil:
470 mm / 18.5 inch
Excursión máx. antes de daño:
58 mm / 2.28 inch
Impedancia mínima:
7 ohm
Diámetro de bobina móvil:
4.5 inch / 114 mm
Material envoltorio de bobina móvil:
Copper
Longitud de bobina móvil:
34 mm / 1.34 inch
Número de capas:
2
Tipo de capas:
inside/outside
Grosor de placa superior:
15 mm / 0.59 inch
Diseño cónico:
Curved
Material de Surround:
Polycotton
Diseño envolvente:
Triple roll
Imanes:
Neodymium
Ventilación por aire forzado doble:
Yes
Doble centrador:
Dual with silicon based damping control
Parámetros Thielle-Small
Frecuencia de resonancia (Fs):
30 Hz
Resistencia en CC (Re):
5.60 ohm
Factor mecánico:
6.10 Qms
Factor eléctrico (Qes):
0.27 Qes
Factor total:
0.26 Qts
Factor BL (BL):
34.50 T x m
Masa móvil útil (Mms) :
315 gr
Carga aérea Cas equivalente (Vas):
375 liters
Área de pistón útil (Sd):
0.17 m2
Excursión lineal máx. (Xmáx):
13 mm
Inductancia de bobina móvil a 1 kHz (Le1k):
3.00 mH
Rendimiento a mitad de espacio (Eff):
4.00%
Informacion de montaje
Diámetro total:
547 mm / 21.54 inches
Diámetro de circunferencia de tornillo:
527 mm / 20.75 inch
Diámetro de orificio de tornillo:
7 mm / 0.28 inch
Hueco de bafle delantero:
512 mm / 20.16 inch
Hueco de bafle trasero:
512 mm / 20.16 inch
Volumen ocupado por motor:
6.5 liters / 0.26 ft3
Cumplimiento estándar
Marca CE:
Yes
Tamaño
Peso:
10.9 kg / 24.03 lbs
Altura:
249 mm / 9.8 inches
Durchmesser:
547 mm / 21.54 inches
Informaciones de envío
Anchura de paquete:
584 mm / 22.99 inches
Peso de paquete:
13.5 kg / 29.76 lbs
Altura de paquete:
284 mm / 11.18 inches
Profundidad de paquete:
604 mm / 23.78 inches
.