Hertz ST25
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Item# 54275 / Condition:  Brand New    Review this product

Hertz ST25

1" 100 Watts Peak Power 4-ohm Impedance High Efficiency Bullet Tweeters

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Save $70.00 | Reg. Price $239.99 In Stock
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ST 25 High Efficiency Bullet Tweeters

Extremely compact size for explosive performance: ST 25 is the first Hertz car audio compression driver specifically designed for SPL competitions. The 25 mm ST 25 with CCAR (Copper Clad Aluminium Ribbon) voice coil features an extra-light aluminium membrane with high thermal dissipation. An extremely powerful neodymium magnet is employed along with a highly efficient compression loading horn, designed for maximum high frequency acoustic pressure.

Product Highlights:

  • High magnetic permeability plates provide constant, even flux.
  • Neodymium magnet, for top SPL performance.
  • CCAR (Copper Clad Aluminium Ribbon) voice coil; for unheard-of thermal and mechanical capability.
  • Extralight aluminium membrane.
  • Anodized aluminium body; for maximum damping and vibration rejection.
  • High current, screw terminals.
  • High efficiency compression loading horn.




  • Size mm (in.): 25 (1)
  • Power Handling - Peak W: 100
  • Impedance: 4 ohms
  • Frequency response Hz: 3k ÷ 20k
  • Sensitivity dB SPL: 107
  • Voice coil Ø mm (in.): 25 (1)
  • Magnet: Neodymium
  • Cone/Dome: Aluminium
  • UPC: 8018823103244
  • Weight: 3
  • Authorized Internet Dealer
*Warranty: 1 Year Manufacturer warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 1 year from the original date of purchase with proper return authorization.