"They work very well indeed with a 2nd order crossover at 6,5~7Khz, and they match very well this way (at 6.7Khz in my case) with a mid driver I am testing it with (for a 3-way speaker).
Notice that the output rolls of fast below 5Khz.
They also work very well as a super tweeter, 1st order, with a fullrange driver (or a smaller mid that goes up to around 10K).
They sound smooth, fast, very detailed and very 'undistorted' if compared to some dome tweeters, even with a 2uf cap, 1st order.
The sound smooths after a few days, don't evaluate them (as everything) on the first listen"
