4″ SB12PFCR-00 / Paper


  • 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

Additional information

Effective piston area

Sd 50 cm2

Free air resonance

Fs 34 Hz


Cms 1.2 mm/N

Moving mass incl. air

Mms 18.8 g

Mechanical loss

Rms 0.32 kg/s

Mechanical Q-factor

Qms 12.5

Equivalent volume

VAS 4.2 liters

Net Weight

83 g

Max Mechanical Cone Excursion

Xmech ±9 mm


T/S parameters measured on drive units that are broken in. Parameters apply with the pre-mounted DW50 in place.



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