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