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SB Acoustics SB20PFCR30-8 Paper Woofer

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The SB Acoustics SB20PFCR30-8 is an 8 inch 8 ohm woofer bass speaker featuring a paper / pulp cone, a vented reinforced plastic chassis and an optimised motor system. A relatively low priced woofer that gives an excellent cost to performance ratio.

Also available in 4 ohms: SB20PFCR30-4.

Key Features:

  • 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.
  • Optimised motor system.
  • Vented coil former for low compression.
  • Non-resonant long life lead wires.

Basic parameters:

Resonant frequency (fs) 34 Hz Nominal impedance (Zn) 8 Ω
Mechanical  Q factor (Qms) 2.66
DC resistance (Re) 5.6 Ω
Electrical Q factor (Qes) 0.43
Max power handling 50 W
Total Q factor (Qts) 0.37
Sensitivity (2.83V/1m)
Equivalent volume (Vas) 66.2L Chassis diameter

Here's the full datasheet:

.pdf link