LF21N551
WOOFER
  • 5.3 - inch Inside/Outside copper voice coil
  • 4000 Watt continuous program power handling
  • 97 dB Sensitivity
  • 30 Hz - 1 kHz Frequency range
  • 5.3 - inch Inside/Outside copper voice coil
  • 4000 Watt continuous program power handling
  • 97 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 39 Txm to provide a faster and accurate low frequency
The LF21N551 is very high power handling 21” neodymium woofer. The combination of a 3600 Watt power handling and a minimum weight of 13,7 Kg makes this transducer a unique product in his category. The transducer design is based on a very strong neodymium magnetic structure and a new 5,3” inside-outside copper coil. The new Dual forced design provide an excellent heat dissipation and lower power compression. Special air-forced ventilations are provided for voice coil, magnet assembly and basket. The combination of carbon fibre loaded cone assembly, large triple roll surround, double silicon spider provides to the LF21N551 remarkable strength and best control under large excursion conditions. A fully optimised T-pole design generate the minimum amount of flux modulation offering a peak to peak excursion of 72 mm. The waterproof body cone treatment and polycotton surround ensure a durable performance in every application.

Artikel-Nummer:

  • 11100076
    LF21N551
    8ohm
Spezifikationen
Allgemeine Speziikationen
Nominal Durchmesser:
21 inch / 533 mm
Anschlussimpedanz:
8 ohm
Programm Power:
4000 W
Belastbarkeit:
2000 W
Empfindlichkeit:
97.0 dB
Frequenzbereich:
30 - 1000 Hz
Nenndurchmesser Membran:
470 mm / 18.5 inch
Maximale Auslenkung vor Schaden:
72 mm / 2.83 inch
Minimale-Impedanz:
7.1 ohm
Schwingspulendurchmesser:
5.3 inch / 135 mm
Schwingspulenmaterial:
Copper
Spulenlänge:
39 mm / 1.54 inch
Layeranzahl:
2
Art von Schichten:
inside/outside
Obere Polplattenstärke:
18 mm / 0.71 inch
Konusdesign:
Curved
Surround Material:
Polycotton
Design Surround:
Triple roll
Magnet:
Neodymium
Doppelbelüftung (Innen/Aussen):
Yes
Spinne:
Dual with silicon based damping control
Thiele - small parameters
Resonanzfrequenz (Fs):
35 Hz
Gleichstromwiderstand (Re):
5.20 ohm
Mechanische Güte:
6.20 Qms
Elektrische Güte (Qes):
0.35 Qes
Gesamt Q-Faktor:
0.33 Qts
Kraftfaktor (BL-Factor):
39.00 T x m
effektiv bewegte Masse (Mms):
434.0 g
Äquivalentes Luftnachgiebigkeitsvolumen (Vas):
200.0 liters
effektive Membranfläche (Sd):
0.170 m2
Maximale lineare Auslenkung (Xmax):
15.0 mm
Schwingspuleninduktivität L @ 1kHz (Le1k):
3.20 mH
Halbraum-Wirkungsgrad r=1m (eff):
2.40%
Montagehinweis
Gesamtdurchmesser:
547 mm / 21.54 inches
Lochkreis Durchmesser:
527 mm / 20.75 inch
Lochdurchmesser:
7 mm / 0.28 inch
Ausschnittsgröße bei frontaler Montage:
512 mm / 20.16 inch
Schallwandöffnung für rückseitige Montage:
512 mm / 20.16 inch
Vom Treiber verdrängtes Volumen (bei frontaler Montage):
7.2 liters / 0.28 ft3
Standardkonformität
CE Zeichen:
Yes
Größe
Gewicht:
14 kg / 30.86 lbs
Höhe:
260 mm / 10.24 inches
Durchmesser:
547 mm / 21.54 inches
Versandinformationen
Verpackung Breite:
604 mm / 23.78 inches
Verpackungsgewicht:
17 kg / 37.48 lbs
Verpackung Höhe:
284 mm / 11.18 inches
Verpackung Tiefe:
584 mm / 22.99 inches
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