The SB12PFCR25-4 by SB Acoustics is a 4 inch 4 ohm midwoofer speaker featuring a blended paper fibre cone, a vented reinforced plastic chassis and an optimised long throw motor system. Smooth extended response, excellent value.
Also available in 8 ohms: SB12PFCR25-8.
Vented reinforced plastic chassis.
Proprietary cone material with natural fibers made in-house.
Butyl rubber surround for smooth frequency response.
Vented motor system for low compression.
Long stroke linear suspension for improved dynamics.
Non-resonant long life lead wires.
Resonant frequency (fs)
Nominal impedance (Zn)
Mechanical Q factor (Qms)
DC resistance (Re)
Electrical Q factor (Qes)
Max power handling
Total Q factor (Qts)
Equivalent volume (Vas)
Here's the full datasheet:
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