SB12NRXF25-8 Bass-midwoofer

62.45

  • Proprietary cone material with natural fibres made in-house
  • Foam surround for maximum transparency and midrange resolution
  • Vented pole piece for reduced compression
  • Vented cast aluminium chassis for optimum strength and low compression
  • CCAW voice coil for reduced moving mass
  • Long life silver lead wires
  • Non-conducting fibre glass coil former for minimum damping
  • Shorting ring in motor system for reduced distortion
  • Description

    The SB12NRXF25-8 is a 4-inch full-range driver from SB Acoustics. It features a proprietary cone material made from natural fibers, a foam surround, a vented cast aluminum chassis, and a CCAW voice coil. The driver has a nominal impedance of 8 ohms and a sensitivity of 87 dB. It is rated for a maximum power handling of 30 watts.

    Highlights

    • Proprietary cone material with natural fibres made in-house
    • Foam surround for maximum transparency and midrange resolution
    • Vented pole piece for reduced compression
    • Vented cast aluminium chassis for optimum strength and low compression
    • CCAW voice coil for reduced moving mass
    • Long life silver lead wires
    • Non-conducting fibre glass coil former for minimum damping
    • Shorting ring in motor system for reduced distortion

    Product details

    SB Acoustics SB12NRXF25-8 Norex Bass-midwoofer 8 ohm

    The SB12NRXF25-8 is a well-rounded 4-inch, 8 ohm, full-range driver that is capable of delivering clear, accurate sound in a variety of applications. It is a good choice for bookshelf speakers, satellite speakers, and subwoofers. The proprietary cone material is made from a blend of natural fibers that is said to provide a more natural and balanced sound than traditional paper cones.

    The foam surround is designed to provide a smooth and accurate response in the midrange frequencies. The vented cast aluminum chassis helps to dissipate heat and reduce distortion. The CCAW voice coil is lightweight and provides good power handling. The long life silver lead wires are resistant to corrosion and oxidation. The non-conducting fiberglass coil former helps to reduce noise and distortion. The shorting ring in the motor system helps to reduce distortion at high frequencies.

    Specifications

    Article number

    SB12NRXF25-8
    EAN

    8785256847921
    Woofer Type
    Bass-midwoofer
    Nominal Diameter
    4 inch
    Power Handling (max)
    30 Watt
    Impedance (Z)
    8 Ω
    Sensitivity (SPL at 1m / 2.83V)
    85 dB
    Frequency Response
    100-2000 Hz
    Voice Coil Diameter
    25.4 mm
    Magnet Weight
    0.40 kg
    DC Resistance (Re)
    6.4 Ω
    Voice Coil Inductance (Le)
    0.34 mH
    Resonant Frequency (Fs)
    63 Hz
    Mechanical Q (Qms)
    5.4
    Electromagnetic Q (Qes)
    0.46
    Total Q (Qts)
    0.42
    Diaphragm Mass Inc. Airload (Mms)
    5.5 g
    Surface Area of Cone (Sd)
    50 cm2
    Compliance Equivalent Volume (Vas)
    4.2 liters
    Driver’s Mechanical Losses (Rms)
    0.4 kg/s
    Overall Outside Diameter
    123 mm
    Overall Depth
    69.8 mm
    # Mounting Holes
    4
    Mounting Hole Diameter
    4.3 mm
    Shipping & Delivery
    USPS Fast Shipping