Fountek NeoCd1.0 1.5" Ribbon Tweeter Metal face plate Neodymium magnet system 1.5" enforced sandwhich ribbon diaphragm Low distortion Aluminum face plate Great value Warning: Ribbon tweeters should always be used with a passive crossover! The ribbon is a dead short to your amp. Do not test without a capacitor. Do not use an electronic crossover without a capacitor (we use 20+ mfd).