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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.
|Resonant frequency (fs)||33 Hz||Nominal impedance (Zn)||4 Ω|
|Mechanical Q factor (Qms)||4.4
||DC resistance (Re)||3.1 Ω|
|Electrical Q factor (Qes)||0.31
||Max power handling||50 W|
|Total Q factor (Qts)||0.29
|Equivalent volume (Vas)||21L||Chassis diameter