The MTX TX225T are 25mm 1" tweeters specialized in the reproduction of high frequencies. These are the tweeters of the MTX TX250S and TX265S separate speakers. They handle 65W RMS and 450W Peak. They have an impedance of 4Ω to fit easily with any ampl (external or integrated into a head..
The MTX TX628T are high-end 28mm tweeters. These are the MTX TX665S tweeters elected best speaker of the year. They can handle 90W RMS and 360W peak (that's a lot of power...). They have an impedance of 4 ohms to suit all amplifiers. Its small outer diameter allows them to be installed ..