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PRECISION TRANSDUCERS

ND940

DRIVER
  • 4.0 inch, Kapton former, edge wound aluminium voice coil
  • 280W continuous program power handling
  • Frequency range: 500Hz - 20kHz
  • 4-slot optimized geometry phase plug
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Caractéristiques
  • 4.0 inch, Kapton former, edge wound aluminium voice coil
  • 280W continuous program power handling
  • Frequency range: 500Hz - 20kHz
  • 4-slot optimized geometry phase plug
  • Titanium diaphragm, Polyimide surround

The ND940 is a ultra compact size, high performance, high power handling 4.0-inch diaphragm compression driver with a 1.4 inch exit throat. A thin copper ring is precision pressed on to the pole piece in order to modify and lower the inductance characteristics of the magnetic circuit and voice coil providing a controlled extension of the acoustic frequency response. The voice coil assembly is designed using a high strength, high temperature Kapton® voice coil former and edge wound copper clad aluminium wire directly joined to the diaphragm by RCF proprietary Direct Drive kapton technology. The ND940 features a 4-slot, optimised geometry, phase plug design. Extended computer assisted mathematical modelling and testing has resulted in a geometry that provides a balanced acoustic performance controlling and lowering air distortion and maximizing output.

Part number:

15100012
ND940 16 OHM
16ohm

15129053
ND940
8ohm

Caractéristiques
Sspecifications generales
Diamètre de la gorge de sortie :
1.4 inch / 36 mm
Impédance relative (Ohm) :
8 ohm
Tension du programme (Watt) :
280 W
Capacité de tension :
140 W
Sensibilité (dB) :
110 dB
Gamme en fréquences :
500 - 20000 Hz
Matériau de la membrane :
Pure Titanium
Matériaux des suspensions :
Polymide
Conception des suspensions :
Flat
Impédance minimale (Ohm) :
8.50 ohm
Diamètre de la bobine mobile :
4.0 inch / 102 mm
Matériau de l’enroulement de la bobine mobile:
Edgewound Aluminium
Ancienne conception de la bobine mobile :
Direct Drive Kapton
Nombre de couches :
1
Type de couches :
outside
Densité du flux (T) :
2.0 T
Conception de la prise de phase :
4 slot
Matériaux de la prise de phase :
Aluminium
Magnétiques :
Neodymium
Anneau de démodulation de la bobine mobile
Copper
Parametres T-S
Facteur BL (BL) (T x m) :
17.60 T x m
Informations montage
Diamètre total :
140 mm / 5.51 inches
Hauteur totale :
60 mm / 2.36 inches
Fixation :
4 x 6 mm threaded holes at 90°
Conformité standard
Safety agency:
CE compliant
Taille
Poids :
2.72 kg / 6 lbs
Infos colisage
Hauteur du colis :
90 mm / 3.54 inches
Largeur du colis :
195 mm / 7.68 inches
Profondeur du colis :
170 mm / 6.69 inches
Poids du colis :
2.87 kg / 6.33 lbs