SB Acoustics SB12NRXF25
4" (10cm) bass-midrange driver
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Description
The SB12NRXF25 is a 4" bass-midrange driver from SB Acoustics. This unique speaker, equipped with its own cone material made of natural fibers, offers a clear, precise sound. It also features a foam surround for maximum midrange transparency and a vented cast aluminum chassis for optimum strength and low compression. With its CCAW voice coil and short-circuit ring in the motor system, the SB12NRXF25 focuses on quality and minimal distortion. A true sound performer for all your audio applications.
Properties
- Proprietary cone material with natural fibers from our own production
- Foam surround for maximum transparency and resolution in the mid-range
- Ventilated pole piece for reduced compression
- Ventilated cast aluminum chassis for optimum strength and low compression
- CCAW voice coil for reduced moving mass
- Durable silver wires
- Non-conductive glass fiber coil carrier for minimal attenuation
- Short-circuit ring in the motor system for reduced distortion
- Nominal impedance 4 Ω
- Direct current resistance, Re 3.1 Ω
- Inductance of the voice coil, Le 0.27 mH
- Effective piston area, Sd 50 cm2
- Voice coil diameter 25.4 mm
- Height of the voice coil 15 mm
- Height of the air gap 5 mm
- Linear coil stroke (p-p) 10 mm
- Magnetic flux density 0.84 T
- Weight of the magnet 0.32 kg
- Net weight 0.75 kg
- Free air resonance, Fs 61 Hz
- Sensitivity (2.83 V / 1 m) 87 dB
- Mechanical Q-factor, Qms 5.3
- Electrical Q-factor, Qes 0.53
- Total Q-factor, Qts 0.48
- Moving mass incl. air, Mms 5.8 g
- Force factor, Bl 3.6 Tm
- Equivalent volume, VAS 4.1 liters
- Compliance, Cms 1.17 mm/N
- Mechanical loss, Rms 0.42 kg/s
- Rated load capacity* 30 W
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