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

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

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    SB Acoustics SB12PAC25-4 4” Aluminium Cone 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.

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

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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

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    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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    Specifications

    Article numberSB12PAC25-4
    Woofer TypeMid-range woofer
    Nominal Diameter4''
    Power Handling (RMS)30 Watts
    Impedance (Z)4 Ohms
    Sensitivity (SPL at 1m / 2.83V)87 dB
    Voice Coil Diameter25.4 mm
    Magnet Weight400 g
    DC Resistance (Re)3.1 Ohms
    Voice Coil Inductance (Le)0.24 mH
    Resonant Frequency (Fs)52.5 Hz
    Mechanical Q (Qms)5.0
    Electromagnetic Q (Qes)0.33
    Total Q (Qts)0.31
    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 MaterialAluminum
    Voice Coil Wire Materialcopper coated alumimium
    Voice Coil FormerFibre glass
    Basket / Frame MaterialPlastic
    Magnet MaterialFerrite
    Overall Outside Diameter108,9 mm
    Overall Depth69,3 mm
    Baffle Cutout Diameter102 mm
    # Mounting Holes4

    Special Features:

    • Vented reinforced plastic chassis
    • Anodised aluminium cone
    • Low damping rubber surround
    • Large vented motor system
    • Long stroke linear suspension
    • Light weight CCAW voice coil
    • Non-conducting fibreglass coil former
    • Non-resonant long life lead wires
    SB12PAC25-4
    4 Items

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