The SB Acoustics SB15NBAC30-4 is a 5 inch 4 ohm midwoofer featuring a black aluminium cone and a vented cast alloy chassis. The rigid cone has pressed geometric reinforcement troughs that suppress ringing / breakup modes offering extended pistonic action, this results in a much wider usable response than normally found with metal coned drive units.
Also available in 8 ohms: SB15NBAC30-8.
Vented cast aluminium chassis for optimum strength and low compression.
Geometrically reinforced aluminum cone for optimum piston operation and reduced break-up.
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.