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APBMW X4M Coaxial | 80 W Peak Power | 100 mm | BMW Upgrade

The APBMW X coaxials have been designed for BMW-MINI models that do not allow the installation of a two-way system on the front of the upgrade of the rear system. The 100 mm (4 in.) APBMW X4M, with basket and fixing screws dedicated to the specific car model, features a water-repellent pressed-paper cone for natural and color-free mid-range frequencies. The 20 mm coil and Tetolon dome tweeter, a material boasting lightness and damping properties offer optimized dispersion features for OEM placement, elevating the sound stage to a realistic level.

Technical Specs

Woofer Size 100 mm
Tweeter Size 24 mm
Woofer Power Handling - Peak 80 W
Woofer Power Handling - Continuous 40 W
Woofer Impedance 4 Ohm
Woofer Frequency Response 100 ÷ 22k
Woofer Magnet Size 50 x 29 x 3
Woofer Voice Coil Diameter 25 mm
Tweeter Voice Coil Diameter 20 mm
Xmax 0.5 mm

Electric-acoustic Specs

D 80 mm
Re 3.4 Ohm
Fs 100 Hz
LE standard 0.32
Vas 1.9 l
Mms 5.1 g
Cms 0.53
Bl 5
Qts 0.4
Qes 0,42
Qms 7.1
Woofer Spl 88 dB


Weight 0.4 kg


Dimension A 102 mm
Dimension B 91 mm
Dimension C 63.5 mm
Dimension D 44.5 mm


Specially developed to fit the midrange and coaxials on BMW models equipped with non-standard fixings.
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  • Specially developed for BMW-Mini models that do not allow
    the installation of a two-way system on the front or
    for rear seat upgrade;
  • Neodymium Magnetic group to maximize performance while
    minimizing bulk and weight;
  • 25 mm (1″) fiberglass woofer voice coil for high power
    dissipation and stiffness;
  • Waterproof pressed-paper cone for medium natural
    frequencies free from any plastic resonance;
  • 20 mm (0.8″) Tetolon coil tweeter with dispersion
    characteristics optimized with FEM simulations;
  • BMW-Mini compatible aluminum die-cast basket with Plug &
    Play connectors;
  • 30 cm extension provided featuring Plug & Play connectors,
    for high flexibility of installation;
  • Damping removable motor cover.

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