The SB Acoustics SB23NBACS45-4 is an 8 inch 4 ohm woofer / bass speaker featuring an aluminium cone, a 45mm voice coil and a shallow profile vented cast aluminium chassis. The cone features geometric reinforcing ribs which control diaphragm breakups / bell modes allowing for a smoother extended frequency response. A versatile unit designed for applications with restricted rear depth.
Also available in 8 ohms: SB23NBACS45-8.
Soft low damping rubber surround for improved transient response.
Geometrically reinforced aluminium cone for improved break-up control.
Shorting ring in motor system for reduced distortion.
Vented pole piece for reduced compression.
Vented cast aluminium chassis for optimum strength and low compression.
Non-conducting fibre glass voice coil former for minimum damping.
CCAW voice coil for reduced moving mass.
Long life silver lead wires.
Shallow chassis design.
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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