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Hertz Dieci DBX 30.3 - Car Audio Subwoofer Box


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The Hertz Dieci DBX 30.3 is a car audio subwoofer box designed to enhance the audio system performance in the low range frequencies, optimizing the spaces and ensuring a quick, not too invasive installation.

The subwoofer unit, which is the DS sub, provides a punching, dynamic, surrounding bass. The very thick MDF enclosure, thanks to its rigid and stable structure, doesn’t affect the acoustics. The rear slanted panel fulfils two important functions: it reduces back-wave reflections and eases the installation.


  • Very high efficiency subwoofer system with superior power handling.
  • Very thick MDF cabinet construction, strong and inert.
  • Angled rear wall, increases damping of resonances and provides easy fitment in any application.
  • High current plated terminals.
  • Polypropylene membrane stiffened with mineral powders.
  • High excursion butyl rubber surround.
  • Deep ribbing on the surface of the cone increase rigidity

Technical Specifications

  • Speaker Size: 300mm (12 in)
  • Power Handling: 1000W Peak - 250W Continuous
  • Impedance: 
  • Frequency Response: 28Hz ÷ 300Hz
  • Sensitivity: 91 dB/SPL
  • Magnet Size: 115mm x 50mm x 25mm
  • Speaker Total Driver Displacement: 1.8 L (108.9
  • Voice Coil ∅: 38mm (1.5 in)
  • Magnet: High density flux ferrite
  • Cone: Polypropylene with Mica injection
  • Weight of one component: 8.4kg (18.52 lb)
  • X-mech: 16mm (0.63 in)

Further Information

Hertz Dieci DBX 30.3 - Car Audio Subwoofer Box - Tech Sheet

Hertz Dieci DBX Sub-Box - User Manual

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