25mm tweeters with X-over & Flush/Surface Fit Options 50 WRMS Reference series tweeter RC25 is a 25 mm silk dome tweeter with neodymium magnet and copper cups in the voice coil / magnet system.Acessories for dashboard and recessed mounting are included.Specifications Impedance 4 ohmPower handling capacity 50 W RMSMax power handling capacity 80 WFrequency range 1.500 - 22.000 HzFs - Resonant frequency 1400 HzRec. crossover point 4 - 6 kHzSensitivity 93 dB (1W/1m)Magnet size 30 mm (1,18") neodymiumOuter diameter 43 mm (1,7")Mounting depth 20 mm ( 0,8")Mounting hole 46 mm (1,81")