Hey Tommycat, The Five, Twelve and Twenty Three use the same tweeter . I am also looking for a pair ,there was some on Epay a while ago and I was negotiating for a pair locally but that deal fell through so I bought a pair of phenolic tweeters to  fill the hole until I find the right ones for my "23" replica build seen here.. Good Luck... https://audiokarma.org/forums/index.php?threads/klh-model-23-dimensions.939140/ Lonny