HERTZ 1" ST 25A Neo High Efficiency Compression Driver

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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 (Coppe r 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. Size mm (in.) 25 (1) Power Handling - Peak W 100 Impedance Ω 4 Frequency response Hz 3k ÷ 20k Sensitivity dB SPL 107 Voice coil Ø mm (in.) 25 (1) Magnet Neodymium Cone/Dome Aluminium Show more