Product details

The Ground Zero GZCT 28M-SPL is a high-performance 28 mm / 1.1″ dome tweeter designed by Ground Zero Audio. It is engineered specifically for high sound pressure level (SPL) car audio environments, offering exceptional volume capacity while maintaining a clear and crisp sound profile. Key Specifications Power Handling: 110 Watts Maximum / 80 Watts RMS Impedance: 4 Ohms Frequency Response: 2,500 Hz – 20,000 Hz Voice Coil Diameter: 28 mm / 1.1″ Component Features Mylar Dome Diaphragm: Lightweight material engineered for high efficiency, linearity, and crystal-clear high frequencies. Neodymium Motor System: Provides an incredibly strong magnetic field in a compact size for reliable voice coil control. Ferrofluid Cooling: Keeps the voice coil cool under heavy loads, increasing long-term power durability. In-Line Crossover Filter: Each package includes 12 dB/octave high-pass filters to protect the tweeters from damaging low frequencies. Mounting Options: Packaged as a pair with surface-mount housings and brackets included for straightforward vehicle placement.