I wanted to provide an update on my experiences with Dave's tweeters for my Klipschorns. A few weeks back Dave contacted me and asked if I'd like to try a set to see if I liked them. I had been in this thread asking about Klipschorn updates (mine are 1972) and got some great feedback from a few members. Dave mailed me the tweeters, which were very well packaged with all the wires and a set of instructions.
It didn't take me long to get them installed - the first speaker took longer than the second one, obviously, and I did have some fit issues with both but nothing that required a skill saw or chisel.
This is where I need to make clear that my networks have been updated from the originals and were provided by DeanG. In that network is a resistor for the mid-horn, which tames them about 6db (or is it 3db - I can't remember it's been a few years). Other than that my Khorns were stock. One OTHER very important thing to note is that about 2 weeks prior I had switched sources and I am now using a Naim Uniti Star. So while that unit improved the sound of my stock Khorns Dave's tweeters have taken them to another level. Maybe a couple levels.
My first impressions after getting them installed is that it was immediately clear the tweeters were much smoother, clearer, warmer, and very complimentary of the whole system. Meaning they sounded like that is how the Khorns should have sounded when they were originally designed.
I messaged Dave and asked if he had broken the tweeters in before he sent them and he said no. I was surprised by this, since they sounded so much better the minute I put them in. I've since broken them in and of course, they have only gotten better. Very sweet, detailed, and not at all fatiguing. I am hearing things in the music that were obscured before and I can listen at higher volume levels with much more clarity.
I'm very happy with them and I want to thank Dave for making such a great product and offering it to me. It was either try them or possibly sell my Khorns and look for something with a more modern design, which I didn't want to do. Now, I can keep my Khorns and be happy with the sound for another 10-15 years which will take me into my 70s and after that I won't care to upgrade, it'll be my son's problem.
A couple of things for you Dave, if you're looking for opportunities to improve: first, perhaps you can thin the lens by about 1/4 inch. After installing them they are not flush and protrude out the front enough to noticeably push the fabric out. Second, they are bare metal (shiny) and because they are pushing on the fabric it's easy to see them. Perhaps a way to paint them black so they don't interfere with the aesthetics?
Other than those things which I can live with because of the increase in sound quality, they are fabulous. For anyone thinking about upgrading their Khorn tweeters I can definitely recommend Dave.