Ground Zero GZNT 28SQ

Model High-Performance tweeter Diameter 28 mm / 1.10? Power Handling (RMS/max.) 90 / 140 Watts Impedance 4 Ohms Efficiency 91 dB Frequency Response 2000 Hz ? 25 kHz Empfohlener Hochpass-Filter 3000 Hz @ 12 dB/oct Voice Coil 28 mm / 1.1? Membran Layout Coated silk dome Magnet material Neodymium Mounting Ø 48 mm / 0.19? Mounting Depth 29 mm / 1.14? Resonance Frequency (Fs) 1350 Hz.