3″ SB10PGC21-4 / Fiberglass


  • Low damping surround and non-conductive voice coil former to ensure good dynamics and transparent sound character with fine detail.
  • Vented voice coil for heat exchange and reduced compression.
  • Light weight CCAW voice coil.
  • Optimized fiber glass cone for smooth response.
  • Compact square chassis for versatile integration.

Additional information

Nominal Impedance

4 Ω

DC resistance

Re 3.4 Ω

Voice coil inductance

Le 0.15 mH

Effective piston area

Sd 27 cm2

Voice coil diameter

20.4 mm

Voice coil height

7.5 mm

Air gap height

3 mm

Linear coil travel (p-p)

4.5 mm

Magnetic flux density

0.8 T

Magnet weight

0.09 kg

Net Weight

0.24 kg

Free air resonance

Fs 89 Hz


(2.83 V / 1 m) 84 dB

Mechanical Q-factor

Qms 11.2

Electrical Q-factor

Qes 1.01

Total Q-factor

Qts 0.92

Moving mass incl. air

Mms 2.8 g

Force factor

Bl 2.3 Tm

Equivalent volume

Vas 1.2 liters


Cms 1.14 mm/N

Mechanical loss

Rms 0.14 kg/s

Rated power handling

20 W


* IEC 268-5, high-pass Butterworth, 200 Hz, 12 dB/oct, T/S parameters measured on drive units that are broken in.



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