Ray_pierrewit Posted February 24, 2020 Share Posted February 24, 2020 I recently spoke with a local gent who is into DIY audio and speaker building who has started to produce "exact clones" of the Fostex H400 wooden horns. From the pictures he's shared, they look exquisite. Very nice craftsmanship. He wants to visit me shortly to show off his wares and hopefully try them out with LaScalas. He says that the current fitting is for a 1 3/8" driver. I believe the cutoff frequency of the horn is 455Hz (though everywhere online seems to indicate 455kHz!). I understand this would mean that it should cross over to the bass bin somewhere around 800Hz, whereas the K400 + K55V is 400hz(?). He told me that he's be ready to build the H200 horn which has a 240Hz cutoff and 2" throat, could this be an interesting candidate for a 2 way system? My main question, is there any danger in temporarily trying these horns out using my (spare) K55Vs in this horn using AA crossovers? I understand it's not ideal and wouldn't be a long term solution. I'll be sure to take some pictures of these homemade horns and share. Daniel 2 Quote Link to comment Share on other sites More sharing options...
codewritinfool Posted February 24, 2020 Share Posted February 24, 2020 We need pics! I don't see any danger in trying it, but that's just my opinion. code Quote Link to comment Share on other sites More sharing options...
OO1 Posted February 24, 2020 Share Posted February 24, 2020 - Quote Link to comment Share on other sites More sharing options...
Deang Posted February 24, 2020 Share Posted February 24, 2020 And the K-700. You are right about it not being ideal, but if you take it easy you should be okay. The K-55 is nearly bulletproof. That H-200 certainly sounds intriguing. Tell him to get busy. Quote Link to comment Share on other sites More sharing options...
Marvel Posted February 24, 2020 Share Posted February 24, 2020 The fostex horns are radials. Parts Express has the plans on their site. http://techtalk.parts-express.com/forum/speaker-project-gallery/57424-here-is-construction-plans-for-fostex-type-of-h400-wooden-horns 3 Quote Link to comment Share on other sites More sharing options...
Marvel Posted February 24, 2020 Share Posted February 24, 2020 The H200 is approx. 26.5 inches wide. It is the only one in the series that has a 2 inch throat. They did have an H300, with a 328hz cutoff, and a 1 inch throat. All three are n this pdf. H200_woodhorn.pdf 1 Quote Link to comment Share on other sites More sharing options...
hanksjim1 Posted February 24, 2020 Share Posted February 24, 2020 inner contour looks a lot like the PWK K-5-J to my untrained eyes... Quote Link to comment Share on other sites More sharing options...
Ray_pierrewit Posted February 24, 2020 Author Share Posted February 24, 2020 2 hours ago, Marvel said: The H200 is approx. 26.5 inches wide. It is the only one in the series that has a 2 inch throat. They did have an H300, with a 328hz cutoff, and a 1 inch throat. All three are n this pdf. H200_woodhorn.pdf 58.92 kB · 5 downloads Marvel, have you ever heard any of the Fostex horns? Quote Link to comment Share on other sites More sharing options...
Marvel Posted February 24, 2020 Share Posted February 24, 2020 1 hour ago, Ray_pierrewit said: 4 hours ago, Marvel said: Marvel, have you ever heard any of the Fostex horns? I have not, but had looked at them a long time ago. For sure there won't be any ringing with those... 😉 Quote Link to comment Share on other sites More sharing options...
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