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The SB Acoustics SB12PFCR-4-COAX is a 2 way coaxial loudspeaker drive unit featuring a 4" paper composite cone midwoofer with a 1" centre mounted soft dome tweeter. You will need to design a suitable crossover for this item - the drive elements are well behaved so modelling is not difficult.
The tweeter is available as a spare part: SB14ST-C000-4 , it can be adapted to repair various other coaxial speakers that feature a 1" pole piece.
|Resonant frequency (fs)||58 Hz||Nominal impedance (Zn)||4 Ω|
|Mechanical Q factor (Qms)||4.07||DC resistance (Re)||3.1 Ω|
|Electrical Q factor (Qes)||0.36
||Max power handling||30 W|
|Total Q factor (Qts)||0.33
|Equivalent volume (Vas)||4.8L||Chassis diameter