SB29RDNC-C000-4 / Fabric


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

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 0.45 g

Free air resonance

Fs 680 Hz


94 dB

Mechanical Q-factor

Qms 1.2

Electrical Q-factor

Qes 0.72

Total Q-factor

Qts 0.45

Force factor

Bl 2.6 Tm

Rated power handling

*100 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.



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