STX Ceramic Tweeter

4" nominal diameter . 40 W Program Power . 20 W AES Power Handling for High Pass Butterworth Filter 2000 Hz 12 dB/oct* . 6 Ohm Nominal impedance . 89 dB Sensitivity . Ceramic diaphragm . Voice coil former material - copper clad aluminum (CCAW) . Triple demodulation copper ring . Copper "Faraday Cap" . Aluminum demodulation ring . Rear chamber with absorbing material and aluminum resonance and reflections diffuser