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SB Acoustics

SB Acoustics SB20PFCR30-8 8'' Paper Cone Woofer

SB Acoustics SB20PFCR30-8 8'' Paper Cone Woofer

Regular price Rs. 4,500.00
Regular price Sale price Rs. 4,500.00
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  • Vented reinforced plastic chassis
  • Proprietary cone material with natural fibers made in-house
  • Soft low damping rubber surround for improved transient response
  • Large spider for improved linearity
  • Optimized motor system
  • Vented coil former for low compression
  • Non-resonant long life lead wires


  • Nominal Impedance 8 Ω
  • DC resistance, Re 5.6 Ω
  • Voice coil inductance, Le 0.84 mH
  • Effective piston area, Sd 216 cm2
  • Voice coil diameter 30.5 mm
  • Voice coil height 16.5 mm
  • Air gap height 5 mm
  • Linear coil travel (p-p) 11.5 mm
  • Magnetic flux density 1.2 T
  • Magnet weight 0.54 kg
  • Net weight 1.42 kg
  • Free air resonance, Fs 34 Hz
  • Sensitivity (2.83V/1m) 90.5 dB
  • Mechanical Q-factor, Qms 2.66
  • Electrical Q-factor, Qes 0.43
  • Total Q-factor, Qts 0.37
  • Moving mass incl. air,Mms 21.2 g
  • Force factor, Bl 7.7 Tm
  • Equivalent volume, Vas 66.2 liters
  • Compliance, Cms 1.0 mm/N
  • Mechanical loss, Rms 1.7 kg/s
  • Rated power handling* 50 W

* IEC 268-5, T/S parameters measured on drive units that are broken in.

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