SB29BNC-C000-4 / Beryllium

PRODUCT COMPARISON

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Features

  • Beryllium dome for non-resonant high frequency extension
  • Copper cap on pole piece for reduced voice coil inductance and minimum phase shift
  • CCAW voice coil for low moving mass
  • Internal pressure equalization and flow resistor for non-resonant coupling of cavities
  • Long life flexible lead wires
  • Inherently shielded neodymium motor system
  • Compact design
  • Low resonance frequency

Specs

  • Nominal Impedance 4 Ω
  • DC resistance, Re 3.0 Ω
  • Voice coil inductance, Le 0.05 mH
  • Effective piston area, Sd 9.6 cm2
  • Voice coil diameter 29.0 mm
  • Voice coil height 2.0 mm
  • Air gap height 2.5 mm
  • Linear coil travel (p-p) 0.5 mm
  • Moving mass incl. air, Mms 0.46 g
  • Free air resonance, Fs 950 Hz
  • Sensitivity (2.83V/1m) 95 dB
  • Mechanical Q-factor, Qms 1.36
  • Electrical Q-factor, Qes 1.40
  • Total Q-factor, Qts 0.69
  • Force factor, Bl 2.6 Tm
  • Rated power handling* 80 W
  • Magnetic flux density 1.2 T
  • Magnet weight 31 g
  • Net weight 0.17 kg

* IEC 268-5, high-pass Butterworth, 2600 Hz, 12 dB/oct