The SB Acoustics SB15CAC30-4 is a 5 inch 4 ohm midwoofer featuring a geometrically reinforced ceramic cone. The ceramic layer is bonded to an aluminium substrate, this combination of materials results in an excellent stiffness to damping ratio; consequently, the midrange distortion figures are class leading. Like other drive units in the CAC range, the SB15CAC30-4 has a fine detailed sound and is largely impervious to the effects of daylight and domestic humidity making it an ideal alternative to paper / pulp types.
Also available in 8 ohms: SB15CAC30-8
Vented cast aluminum chassis for optimum strength and low compression.
Soft low damping rubber surround for improved transient response.
Geometrically reinforced ceramic cone for optimal piston operation.
CCAW voice coil for reduced moving mass.
Non-conducting fibre glass coil former for minimal damping.
Extended copper sleeve on pole piece for low inductance / low distortion.
Vented pole piece for reduced compression.
Long life silver 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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