Dayton ND91-8

HiFi full-range speaker

Manufacturer parameters
  • Diameter: 3,5" (9cm)
  • Power (W): 30
  • Impedance (Ohm): 8
  • Sensitivity (db/1W): 82
  • Qts: 0,47
  • Price: 31€
  • Diaphragm: Aluminium
  • Basket: Steel
  • Magnet: neo, underhung motor
Measured parameters (brand new, never played)
  • Fs = 82 Hz
  • Re = 7.80 ohms
  • Le = 479.01 uH
  • Qt = 0.57
  • Qes = 0.64
  • Qms = 5.78
  • Mms = 5.18 grams
  • Cms = 0.728 mm/N
  • Vas = 0.82 liters
  • Sd = 28.27 cm^2
  • Bl = 5.76 Tm
  • gamma = 1112 N/A.kg
  • ETA = 0.07 %
  • Lp(2.83V/1m) = 80.60 dB



My comment:
Great bass performer for its size, will handle up to 25mm of excursion, with 9.2mm of p-p Xmax.

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