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

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

SB12MNRX2-25-4
44.00 € Maksudeta
54.56 € tax incl. for EU buyers

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

Kogus
Laos

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 Impedance 4 Ω Free air resonance, Fs 58 Hz
DC resistance, Re 3.2 Ω Sensitivity (2.83 V / 1 m) 91 dB
Voice coil inductance, Le 0.15 mH Mechanical Q-factor, Qms 3.6
Effective piston area, Sd 50 cm2 Electrical Q-factor, Qes 0.29
Voice coil diameter 25.4 mm Total Q-factor, Qts 0.27
Voice coil height 9.5 mm Moving mass incl.air, Mms 4.1 g
Air gap height 5 mm Force factor, Bl 4.1 Tm
Linear coil travel (p-p) 4.4 mm Equivalent volume, Vas 6.3 liters
Magnetic flux density 1.03 T Compliance, Cms 1.77 mm/N
Magnet weight 0.4 kg Mechanical loss, Rms 0.4 kg/s
Net weight 0.92 kg Rated power handling* 50 W
* IEC 268-5, high-pass Butterworth, 200 Hz, 12 dB/oct.
SB12MNRX2-25-4
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