Conclusion: When you're looking for car tweeters, this is the best tweeter for the money. My system is divided into 3 different frequencies (3 way) with 3way active crossover. I have 8 of these, wired in parallel on each channel from my old school Rockford Fosgate P400.4.
Conclusion: I love these Pioneer tweeters. I have owned a number of different brands of tweeters over the years. These are hands down the best sounding. They are not harsh at all. No hissing "S" sound. They get really loud, but it is a crisp, clean loud. They really brighten and enhance the sound stage.