5×8″ SB15SFCR39-4 / Paper

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Features

  • Racetrack design
  • Hard paper cone (made in-house)
  • Optimized motor system
  • Non-conductive reinforced vented coil former
  • Symmetric suspension
  • Low damping rubber surround
  • Long life silver lead wires
  • Vented chassis

Specs

  • Nominal Impedance 4 Ω
  • DC resistance, Re 3.5 Ω
  • Voice coil inductance, Le 0.88 mH
  • Effective piston area, Sd 178 cm2
  • Voice coil diameter 38.5 mm
  • Voice coil height 17 mm
  • Air gap height 6 mm
  • Linear coil travel (p-p) 11 mm
  • Magnetic flux density 0.94 T
  • Magnet weight 0.54 kg
  • Net weight 1.65 kg
  • Free air resonance, Fs 31.5 Hz
  • Sensitivity (2.83V/1m) 89.5 dB
  • Mechanical Q-factor, Qms 7.9
  • Electrical Q-factor, Qes 0.34
  • Total Q-factor, Qts 0.33
  • Moving mass incl. air,Mms 24 g
  • Force factor, Bl 7.0 Tm
  • Equivalent volume, Vas 47.8 liters
  • Compliance, Cms 1.06 mm/N
  • Mechanical loss, Rms 0.6 kg/s
  • Rated power handling* 80 W

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