SB ACOUSTICS 5" MID-WOOFER - NRXC

    $79.50

  • Order Code: SB15NRXC30-8
  • Availability: In Stock
  • ALUMINIUM CHASSIS - PAPYRUS CONE COATED

  • Proprietary cone material with natural fibres made in-house with an optional thin polyurethane protection coating. Low damping SBR rubber surround with high exertion and resilience. Open structure cast frame for reduced reflections and compression. Aluminium alloy for light weight, non-magnetic and extra rigidity. Shorting Copper cap on pole piece. Non-inductive CCAW fibre glass 30mm coil former. Silver lead wires. Vented pole piece.

    • 30mm Voice Coil diameter
    • Frequency range 38Hz to 4kHz
    • Gasket
    • Vented cast aluminium chassis for optimum strength and low compression
    • Proprietary cone material with natural fibers made in-house
    • Soft low damping rubber surround for improved transient response
    • Non-conducting fiber g...

  • The goal of SB Acoustics with their NRX series of performance drivers has been to design a simple, yet optimised speaker driver at a competitive price to achieve a high performance to cost ratio for their customers who appreciate premium quality audio. To this end, SBA are proud to present their NRX series: Close attention to design engineering with manufacturing materials and processes to optimize performance. The coil former material is fibre glass. It is fundamental to use a non-conducting former material to ensure a low mechanical loss and high Qms. We prefer the damping to be electrical rather than mechanical, as this puts the amplifier in control. This is important if you want the driver to accurately reproduce the electrical signal. The woofers feature large diameter copper wire voice coils for improved power handling and allows for efficient ventilation through the centre pole. The basket is also vented under the spider to reduce compression to an absolute minimum, which is necessary to ensure good dynamics. The motor structure is simple, but all dimension have been optimizes to ensure BL symmetry and good saturation of the iron in the coil region. The surrounds are low damping SBR with a low shore hardness, which ensures good linearity. Stability is obtained by making the rolls just thick enough to withstand the high pressure in smaller cabinets without “collapsing”. The geometry of the surround and spider start limiting at the same time with a linear region slightly exceeding that of the coil overhang. This all ensures good linearity without hard clipping or mechanical damage to the cone at high levels. The cone material is made in-house using a proprietary blended hard stiff natural materials we call NOREX®. Cone stiffness is important to a woofer, as it should behave like a piston that moves air without flexing. This clearly improves bass reproduction. The baskets are cast aluminium to insure a rigid open structure. This makes the optimum foundation for the moving parts and has been designed not only to look good but also to offer some unique mounting options. They even come with gaskets pre-mounted. The design considerations have been the same for the mid-woofers. For the mid-woofers we have selected the cone material we found to have the most natural sound character. For each of the mid-woofers, we have carefully chosen the cone weight, as this is also a very important parameter in the pursuit of a natural and balanced sound character. The 5” and 6.5” mid-woofers use an extended copper cap on the pole piece, which controls variations in voice coil inductance, thereby lowering modulation distortion in the important midrange area. The copper cap also reduces the inductance. This results is increased bandwidth and improved transient response. Read / Show More
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    Product Specs for SB ACOUSTICS 5" MID-WOOFER - NRXC

    Description NRX Coated
    eBook

    Link to eBook

    Zn 0.14mH
    Le 0.14mH
    Qts 0.33
    Qes 0.35
    Rms 0.4kg/s
    Mag. 0.54kg
    Power (RMS) 0-50 Watt
    QTY 1
    Xmax 10mm
    Diam. 127mmØ
    Width 150mmØ
    Flux (lm) 1T
    Cms 2.17mm/N
    Vas 20.7L
    Page 27
    Coil 30.5mmØ
    Fs 38Hz
    Qms 4.8
    Inch 5
    Size 5"
    Bl 5.6Tm
    Re 5.7Ω
    Prms 50W
    Power 50Wrms
    Depth 70mm
    Impedance (Ohm) 8 ohm
    Mms 8.1g
    Sd 82cm²
    Sens. 88dB
    Impedance 8Ω (Re 5.7Ω)
    Materials Coated
    Price Type each
    Type Mid-Woofer
    Series Norex Cones
    Brand SB Acoustics
    Manufacturer SB Acoustics
    DescriptionFileSize
    Datasheet SB15NRXC30-8.pdf 708 KB
    SB Acoustics Catalogue SB-Acoustics-Catalogue.pdf 10076 KB

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