Adding to the previous reviews, these are amazing tweeters. They don't even sound like tweeters, because they don't exaggerate the highs. Instead they produce clear effortless sound with incredible presence and extension, that brings out all the details in your music. If you shop around, name brand AMT Tweeters cost 3-4 times what these do. $200-$400 is crazy money to spend, but these sound like you spent that much. Check the speaker leads, mine were touching the shell, so I added a layer of electrical tape to assure there was no accidental shorting. Although I did not buy this tweeter here, I have what I believe is the same product [Tianle AMT65-4]. I crossed over at 2.8Khz in a 2-Way /6.534; system. System frequency response measured flat from 1Khz to 15Khz. My system fluctuated in response below 1Khz, but that is no fault of these tweeters. If you can fit these, I can't imagine a better option. I have another system running ASK AMT Tweeters (at 3 times the cost). To compare, these seem a little bit smoother, where the ASK seemed more dynamic. I believe that is because of the better amplifier, in the ASK system. Regardless these compare well to a high end ASK AMT. If you like lots of clarity from the upper mids to the extreme top end, AMT Tweeters are the ticket.
Rating: [5 of 5 Stars!]