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SB Acoustics 4" midrange with rubber NRX2 Norex cone, SB12MNRX2-25-4

SB12MNRX2-25-4

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SB Acoustics 4" midrange with rubber NRX2 Norex cone, SB12MNRX2-25-4

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53,68 €

44,00 € tax excl.***

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SB Acoustics 4" midrange with rubber NRX2 Norex cone, SB12MNRX2-25-4

Special Features

  • Proprietary cone material with natural fibres made in-house
  • Shortened voice coil optimized for pure midrange reproduction
  • High damping Butyl rubber surround for non-resonant sound character
  • Vented pole piece for reduced compression
  • Vented cast aluminium chassis for optimum strength and low compression
  • CCAW voice coil for reduced moving mass
  • Long life silver lead wires
  • Non-conducting fibre glass coil former for minimum damping

Specifications:

Nominal Impedance4 ΩFree air resonance, Fs58 Hz
DC resistance, Re3.2 ΩSensitivity (2.83 V / 1 m)91 dB
Voice coil inductance, Le0.15 mHMechanical Q-factor, Qms3.6
Effective piston area, Sd50 cm2Electrical Q-factor, Qes0.29
Voice coil diameter25.4 mmTotal Q-factor, Qts0.27
Voice coil height9.5 mmMoving mass incl.air, Mms4.1 g
Air gap height5 mmForce factor, Bl4.1 Tm
Linear coil travel (p-p)4.4 mmEquivalent volume, Vas6.3 liters
Magnetic flux density1.03 TCompliance, Cms1.77 mm/N
Magnet weight0.4 kgMechanical loss, Rms0.4 kg/s
Net weight0.92 kgRated power handling*50 W
* IEC 268-5, high-pass Butterworth, 200 Hz, 12 dB/oct.

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SB Acoustics 4" midrange with rubber NRX2 Norex cone, SB12MNRX2-25-4

SB Acoustics 4" midrange with rubber NRX2 Norex cone, SB12MNRX2-25-4

SB Acoustics 4" midrange with rubber NRX2 Norex cone, SB12MNRX2-25-4