SB Acoustics SB15MFC30-8 5'' Poly Cone Woofer
Features:
- Vented cast aluminium chassis for optimum strength and low compression
- Mineral filled PP-cone made in-house
- Soft low damping rubber surround for improved transient response
- Non-conducting fibre glass voice coil former for minimum damping
- Extended copper sleeve on pole piece for low inductance and low distortion
- CCAW voice coil for reduced moving mass
- Long life silver lead wires
- Vented pole piece for reduced compression
Specifications:
- Nominal Impedance 8 ?
- DC resistance, Re 5.7 ?
- Voice coil inductance, Le 0.14 mH
- Effective piston area, Sd 82 cm2
- Voice coil diameter 30.5 mm
- Voice coil height 15 mm
- Air gap height 5 mm
- Linear coil travel (p-p) 10 mm
- Magnetic flux density 1.0 T
- Magnet weight 0.54 kg
- Net weight 1.48 kg
- Free air resonance, Fs 39 Hz
- Sensitivity (2.83 V / 1 m) 87 dB
- Mechanical Q-factor, Qms 4.4
- Electrical Q-factor, Qes 0.4
- Total Q-factor, Qts 0.37
- Moving mass incl. air, Mms 9.0 g
- Force factor, Bl 5.6 Tm
- Equivalent volume, VAS 17.7 liters
- Compliance, Cms 1.85 mm/N
- Mechanical loss, Rms 0.5 kg/s
- Rated power handling* 50 W
* IEC 268-5, T/S parameters measured on drive units that are broken in.
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