SPL Dynamics XTR-300D2

Automotive subwoofer

Manufacturer parameters
  • Diameter: 12" (30cm)
  • Power (W): 750/1500
  • Impedance (Ohm): 2x2
  • Sensitivity (db/1W): 86,3
  • Fs: 31,7
  • Qts: 0,452
  • Price: 199€
  • Diaphragm: kevlar/paper
  • Basket: Aluminium diecast
  • Magnet: 160oz
Measured parameters (brand new, no burn-in)
  • Fs = 42.69 Hz
  • Re = 3.90 ohms
  • Le = 1130.65 uH
  • Qt = 0.51
  • Qes = 0.54
  • Qms = 8.59
  • Mms = 149.57 grams
  • Cms = 0.092 mm/N
  • Vas = 32.79 liters
  • Sd= 502.73 cm^2
  • Bl = 18.39 Tm
  • gamma = 122 N/A.kg
  • ETA = 0.53 %
  • Lp(2.83V/1m) = 92.49 dB


Used woofer
  • Fs = 38.31 Hz
  • Re = 3.90 ohms
  • Le = 1140.81 uH
  • Qt = 0.50
  • Qes = 0.53
  • Qms = 8.44
  • Mms = 197.68 grams
  • Cms = 0.088 mm/N
  • Vas = 31.10 liters
  • Sd= 502.73 cm^2
  • Bl = 19.521376 Tm
  • gamma = 98 N/A.kg
  • ETA = 0.34 %
  • Lp(2.83V/1m) = 90.59 dB




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