4SB12PFC25-4-R-pic

4″ SB12PFCR25-8 / Paper

Categories: , , ,

Features

  • Vented reinforced plastic chassis
  • Proprietary cone material with natural fibers made in-house
  • Butyl rubber surround for smooth frequency response
  • Vented motor system for low compression
  • Long stroke linear suspension for improved dynamics
  • Non-resonant long life lead wires

Specs

  • Nominal Impedance 8 Ω
  • DC resistance, Re 6.4 Ω
  • Voice coil inductance, Le 0.36 mH
  • Effective piston area, Sd 50 cm2
  • Voice coil diameter 25.4 mm
  • Voice coil height 15 mm
  • Air gap height 5 mm
  • Linear coil travel (p-p) 10 mm
  • Magnetic flux density 0.84 T
  • Magnet weight 0.32 kg
  • Net weight 0.7 kg
  • Free air resonance, Fs 64 Hz
  • Sensitivity (2.83 V / 1 m) 84.5 dB
  • Mechanical Q-factor, Qms 4.10
  • Electrical Q-factor, Qes 0.65
  • Total Q-factor, Qts 0.56
  • Moving mass incl. air, Mms 5.1 g
  • Force factor, Bl 4.5 Tm
  • Equivalent volume, VAS 4.3 liters
  • Compliance, Cms 1.21 mm/N
  • Mechanical loss, Rms 0.5 kg/s
  • Rated power handling* 30 W

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