Merkmale
  • 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.

Part number:

11100092
LF21X451

Spezifikationen
Allgemeine spezifikationen
Nominal Durchmesser
21 inch / 533 mm
Anschlussimpedanz (Ohm)
8 ohm
Programm Power (Watt)
4000 W
Belastbarkeit
2000 W
Empfindlichkeit (dB)
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 (Ohm)
6.7 ohm
Schwingspulendurchmesser
4.5 inch / 114 mm
Schwingspulenträgermaterial
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
Surround Design
Triple roll
Magnet
Ceramic
Doppelbelüftung (Innen/Aussen)
Yes
Spinne
03
Thiele - small parameters
Resonanzfrequenz (Fs) (Hz)
28 Hz
Gleichstromwiderstand (Re) (Ohm)
5.40 ohm
Mechanische Güte (Qms)
6.90 Qms
Elektrische Güte (Qes)
0.39 Qes
Gesamt Q-Faktor (Qts)
0.37 Qts
Kraftfaktor (BL-Factor) (T x m)
30.50 T x m
effektiv bewegte Masse (Mms)(g)
355.0 g
Äquivalentes Luftnachgiebigkeitsvolumen (Vas) (Liter)
385.0 liters
effektive Membranfläche (Sd) (m2)
0.170 m2
Maximale lineare Auslenkung (Xmax) (mm)
14 mm
Schwingspuleninduktivität L @ 1kHz (Le1k) (mH)
2.90 mH
Halbraum-Wirkungsgrad r=1m (eff) (%)
2.20%
Montagehinweise
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
Safety agency
CE compliant
Größe / Gewicht
Höhe
245 mm / 9.65 inches
Durchmesser
547 mm / 21.54 inches
Gewicht
15.5 kg / 34.17 lbs
Versandinformationen
Verpackung Höhe
284 mm / 11.18 inches
Verpackung Breite
584 mm / 22.99 inches
Verpackung Tiefe
604 mm / 23.78 inches
Verpackungsgewicht
18.5 kg / 40.79 lbs
Downloads
DATENBLÄTTER
PDF
462 KB
19-08-2024
PDF
61 KB
11-07-2024
ZEICHNUNGEN
PDF
395 KB
21-03-2018
ZIP
3,8 MB
22-01-2024
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