Pioneer TS-W308D4

Autohifi subwoofer

Manufacturer parameters
  • Diameter: 12" (30cm)
  • Power (W): 400/1400
  • Impedance (Ohm): 4 (DVC)
  • Sensitivity (db/1W): 92
  • Qts: 0,62
  • Price: 84€
  • Diaphragm: sandwich polypropylén + aramidové vlákna
  • Basket: plech
  • Magnet: double
Measured parameters
  • Parallel/Series
  • Fs = 33.68 Hz
  • Re = 1.65/6.7 ohms[dc]
  • Le = 1106.53/4398.45 uH
  • Qt = 0.50
  • Qes = 0.52
  • Qms = 13.15
  • Mms = 219.43/167.02 grams
  • Cms = 0.000100/0.000136 m/N
  • Vas = 24.22/33.03 liters
  • Sd= 415.48 cm^2
  • Bl = 12.160698/21.143213 Tm
  • gamma = 55.4/126,6 N/A.kg
  • ETA = 0.17/0.22 %
  • Lp(2.83V/1m) = 91.39/86.39 dB (86dB/1W)
  • EBP=65 Hz (bassreflex/uzavretá)


Recommended enclosure:
SQ - Closed 25l
SPL - Bassreflex 45l @ 53,5Hz (port area at least 170cm2)

Just like W306c, only an average driver, in this case less suitable for use in bass-reflex enclosure.

front rear Basket and terminal cone rear suspension