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SB Acoustics SB12PFCR-00 4" Passive Bass Radiator

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The SB Acoustics SB12PFCR-00 is a 4 inch paper cone passive bass radiator designed to complement the SB12PFCR drive units. The mass loading is easily adjusted to suit the given application.

Key Features:

  • Vented reinforced plastic chassis.
  • Proprietary cone material with natural fibres made in-house.
  • Low damping rubber surround.
  • Long stroke linear suspension.
  • Easily adjustable moving mass.

Basic parameters:

Resonant frequency (fs) 21 Hz Nominal impedance (Zn) -
Mechanical  Q factor (Qms) 12.5
DC resistance (Re) -
Electrical Q factor (Qes) -
Max power handling -
Total Q factor (Qts) -
Effective piston area cm²
Equivalent volume (Vas) 4.2L Chassis

Here's the full datasheet:

.pdf link