Hello TiGuy22, these are the phenolic tweeters I used,  see post #22  ,  I am still searching for my model 23 tweeters . https://audiokarma.org/forums/index.php?threads/klh-model-23-dimensions.939140/page-2 as for the 17's" affect - a quote from dxho on my other thread. Posted December 12, 2020 "If you weren't aware, Model Five and Twelve tweeters are equivalent. Model Six, Seventeen, Twenty, Thirty, and Thirty Three will fit, but they have different voici