SB12MNRX25-4
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SB Acoustics 4" midwoofer with rubber NRX Norex cone, SB12MNRX25-4
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SB Acoustics 4" midwoofer with rubber NRX Norex cone, SB12MNRX25-4
Specifications:
Nominal Impedance | 4 Ω | Free air resonance, Fs | 58 Hz |
DC resistance, Re | 3.2 Ω | Sensitivity (2.83 V / 1 m) | 88.5 dB |
Voice coil inductance, Le | 0.14 mH | Mechanical Q-factor, Qms | 3.6 |
Effective piston area, Sd | 50 cm2 | Electrical Q-factor, Qes | 0.42 |
Voice coil diameter | 25.4 mm | Total Q-factor, Qts | 0.37 |
Voice coil height | 9.5 mm | Moving mass incl.air, Mms | 4.9 g |
Air gap height | 5 mm | Force factor, Bl | 3.7 Tm |
Linear coil travel (p-p) | 4.5 mm | Equivalent volume, Vas | 5.5 liters |
Magnetic flux density | 0.9 T | Compliance, Cms | 1.55 mm/N |
Magnet weight | 0.4 kg | Mechanical loss, Rms | 0.5 kg/s |
Net weight | 0.85 kg | Rated power handling* | 50 W |
* IEC 268-5, high-pass Butterworth, 200 Hz, 12 dB/oct. |
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