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        SB Acoustics SB12PAC25-4 4” Aluminium Cone Mid-range Woofer

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        5 from 5
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        € 24,75€ 29,95 1 In stock4 expected on 09-06-2023
        • -5% Order 4 for only € 28,45 per piece

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        • At least two years warranty
        • 45-day cooling-off period to return
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        Product description


        • Vented reinforced plastic chassis
        • Anodized aluminum cone
        • Low damping rubber surround
        • Large vented motor system
        • Long stroke linear suspension
        • Light-weight CCAW voice coil
        • Non-conducting fiberglass coil former
        • Non-resonant long life lead wires


        Product details

        SB Acoustics SB12PAC25-4 4” Aluminium Mid-range Woofer


        The SB Acoustics SB12PAC25-4 is a 4 inch mid-range woofer with an aluminium cone. The SB12PAC25-4 uses a light-weight copper coated aluminium wire voice coil to create a responsive mid-range woofer. It also has a low Fs frequency which should allow for a low crossover point in a 3-way system. 

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        Article number
        Woofer Type
        Mid-range woofer
        Nominal Diameter
        Power Handling (RMS)
        30 Watts
        Impedance (Z)
        4 Ohms
        87 dB(2.83V/1m)
        Voice Coil Diameter
        25.4 mm
        Magnet Weight
        400 g
        DC Resistance (Re)
        3.1 Ohms
        Voice Coil Inductance (Le)
        0.24 mH
        Resonant Frequency (Fs)
        52.5 Hz
        Mechanical Q (Qms)
        Electromagnetic Q (Qes)
        Total Q (Qts)
        Diaphragm Mass Inc. Airload (Mms)
        6.1 g
        Mechanical Compliance of Suspension (Cms)
        1.5 mm/N
        Surface Area of Cone (Sd)
        50 cm2
        BL Product (BL)
        4.35 Tm
        Maximum Linear Excursion (Xmax)
        5 mm
        Driver's Mechanical Losses (Rms)
        0.4 kg/s
        Cone / Diaphragm Material
        Voice Coil Wire Material
        copper coated alumimium
        Voice Coil Former
        Fibre glass
        Basket / Frame Material
        Magnet Material
        Overall Outside Diameter
        108,9 mm
        Overall Depth
        69,3 mm
        Baffle Cutout Diameter
        102 mm
        # Mounting Holes

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        5 of 5
        Very very good driver. It performes much better than its cost, very clear and detailed, huge bass for the size with the right crossover. Recommended to replace those old Seas from the 90's that were considered as legendary: 30 years have passed since then and this sounds much better and modern. Highly recommended
        By Osvaldo Lombardi on 8 April 2023
        SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
        € 24,75
        € 29,95
        SB12PAC25-4 4” Aluminium Cone Mid-range Woofer
        1 In stock
        4 expected on 09-06-2023
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