12″ SB34NRX75-6 / Norex


  • High flow venting center pole
  • 3″ voice coil
  • Low dampening surround
  • Non-inductive voice coil former
  • Proprietary cone materials made-in-house
  • Cast Aluminium chassis
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Additional information

Nominal Impedance

6 Ω

DC resistance

Re 4.2 Ω

Voice coil inductance

Le 1.8 mH

Effective piston area

Sd 508 cm2

Voice coil diameter

75.6 mm

Voice coil height

28 mm

Air gap height

6 mm

Linear coil travel (p-p)

22 mm

Magnetic flux density

0.9 T

Magnet weight

2.1 kg

Net Weight

6.02 kg

Free air resonance

Fs 19 Hz


(2.83V/1m) 90 dB

Mechanical Q-factor

Qms 5.1

Electrical Q-factor

Qes 0.43

Total Q-factor

Qts 0.40

Moving mass incl. air

Mms 99 g

Force factor

Bl 10.7 Tm

Equivalent volume

Vas 260 liters


Cms 0.71 mm/N

Mechanical loss

Rms 2.3 kg/s

Rated power handling

200 W


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



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