Absolute USA PBT40B 4-Inch Titanium Bullet High Compression Tweeter with 5.4 Oz Ferrite Magnet Pair 4" Titanium Bullet High Compression Tweeter 5.4 Oz Ferrite Magnet 1 high Temperature Kapton Voice Coil 300 Watts Max/50 Watts RMS Impedance 4 OHMS