LF21X451
WOOFER
  • 4,5 - inch fiberglass Inside/Outside copper voice coil
  • 4000 Watt continuous program power handling
  • 97 dB Sensitivity
  • 28 Hz - 1 kHz Frequency range
  • 4,5 - inch fiberglass Inside/Outside copper voice coil
  • 4000 Watt continuous program power handling
  • 97 dB Sensitivity
  • 28 Hz - 1 kHz Frequency range
  • Dual-forced air ventilation for minimum power compression
  • Dual spider designed with silicon based damping control
  • BL of 30.5 Txm to provide a faster and accurate low frequency
The LF21X451 low frequency transducer is the result of many years of R&D developments with the goal of creating new levels of professional audio performance standards. This products features advancements and improvements in all the key areas of transducer technology. Incredibly linear frequency response characteristics, the highest power handling of any comparable transducer, the lowest power compression. The LF21X451 features a fibre loaded cone assembly along with a high excursion triple roll, constant geometry surround: this combination provides remarkable strength and a peak to peak maximum excursion of 54 mm. The new dual forced hyper-venting system guarantee a very efficient voice coil ventilation for minimum power compression and incredible power handling.

Artikel-Nummer:

  • 11100092
    LF21X451
Spezifikationen
Allgemeine Speziikationen
Nominal Durchmesser:
21 inch / 533 mm
Anschlussimpedanz:
8 ohm
Programm Power:
4000 W
Belastbarkeit:
2000 W
Empfindlichkeit:
97.0 dB
Frequenzbereich:
28 - 1000 Hz
Nenndurchmesser Membran:
470 mm / 18.5 inch
Maximale Auslenkung vor Schaden:
54 mm / 2.13 inch
Minimale-Impedanz:
6.7 ohm
Schwingspulendurchmesser:
4.5 inch / 114 mm
Schwingspulenmaterial:
Copper
Spulenlänge:
34 mm / 1.34 inch
Layeranzahl:
2
Art von Schichten:
inside/outside
Obere Polplattenstärke:
15 mm / 0.59 inch
Konusdesign:
Curved
Surround Material:
Polycotton
Design Surround:
Triple roll
Magnet:
Ceramic
Doppelbelüftung (Innen/Aussen):
Yes
Spinne:
Dual with silicon based damping control
Thiele - small parameters
Resonanzfrequenz (Fs):
28 Hz
Gleichstromwiderstand (Re):
5.40 ohm
Mechanische Güte:
6.90 Qms
Elektrische Güte (Qes):
0.39 Qes
Gesamt Q-Faktor:
0.37 Qts
Kraftfaktor (BL-Factor):
30.50 T x m
effektiv bewegte Masse (Mms):
355.0 g
Äquivalentes Luftnachgiebigkeitsvolumen (Vas):
385.0 liters
effektive Membranfläche (Sd):
0.170 m2
Maximale lineare Auslenkung (Xmax):
14.0 mm
Schwingspuleninduktivität L @ 1kHz (Le1k):
2.90 mH
Halbraum-Wirkungsgrad r=1m (eff):
2.20%
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):
6.5 liters / 0.26 ft3
Standardkonformität
CE Zeichen:
Yes
Größe
Gewicht:
15.5 kg / 34.17 lbs
Höhe:
245 mm / 9.65 inches
Durchmesser:
547 mm / 21.54 inches
Versandinformationen
Verpackung Breite:
584 mm / 22.99 inches
Verpackungsgewicht:
18.5 kg / 40.79 lbs
Verpackung Höhe:
284 mm / 11.18 inches
Verpackung Tiefe:
604 mm / 23.78 inches
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