Thanks Paul. This is great information. One question I have, is that while the impedance of the Piezo tweeter is commonly 1000 Ohms, doesn't the impedance roll off to be lower at the higher frequencies? I seem to remember that they have an impedance curve, which rolls off as the frequency increases, which is why they naturally do not need a crossover. Unfortunately, I have not been able to find the spec sheet that shows the impedance curve for the KSN1025 tweeter. This is important, as I'm looking at tri-amping a system, whereby the high end will consist of exclusively KSN1025 tweeters. So while the amps involved will have the frequencies under 1KHz dampened by 30+db, above that they will roll up to full power. If the impedance of the tweeters are a steady 1K Ohm, the amps could be damaged.
