SB Acoustics SB12CACS25-8 4'' ceramic woofer
Features:
- Vented cast aluminum chassis for optimum strength and low compression
- Ceramic cone
- Soft low damping rubber surround for improved transient response
- Shorting ring in motor system for reduced distortion
- Non-conducting fibre glass voice coil former for minimum damping
- 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 6.4 ?
- Voice coil inductance, Le 0.34 mH
- Effective piston area, Sd 50 cm2
- Voice coil diameter 25.4 mm
- Voice coil height 15 mm
- Air gap height 5 mm
- Linear coil travel (p-p) 10 mm
- Magnetic flux density 1.07 T
- Magnet weight 0.40 kg
- Net weight 0.92 kg
- Free air resonance, Fs 51 Hz
- Sensitivity (2.83 V / 1 m) 85.5 dB
- Mechanical Q-factor, Qms 4.85
- Electrical Q-factor, Qes 0.4
- Total Q-factor, Qts 0.37
- Moving mass incl. air, Mms 5.3 g
- Force factor, Bl 5.2 Tm
- Equivalent volume, VAS 6.5 liters
- Compliance, Cms 1.84 mm/N
- Mechanical loss, Rms 0.35 kg/s
- Rated power handling* 30 W
* IEC 268-5, T/S parameters measured on drive units that are broken in.
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