Arash Posted May 12, 2015 Author Share Posted May 12, 2015 actually I calculated a cf190hz Edgar style horn for a friend and thought maybe someone else is also interested to build such a horn so I'm sharing the plane here though it's not something very unknown to many of you: 40cm height to 80cm width ratio would be 1:2 not 1:1.5 besides you don't need a 80cm horn to get down to 190hz cf. I calculated it for you with following details: width to height ratio: 2:1 cuttoff freq.: 190hz height of the horn: 35.69 cm width of the horn: 71.395 cm lenght of the horn (throat to mouth): 56.73 cm you can download the Coreldraw file with 100% actual dimension: cf190 plan.zip a preview of what you'll find in Coreldraw file: cf190hz bruce edgar horn.png feel free to ask me if you have any problem with file format or extension or whatever. Any way you can share a .dwg file? sure why not .dwg version: cf190 plan.zip Quote Link to comment Share on other sites More sharing options...
djk Posted May 12, 2015 Share Posted May 12, 2015 "Is this the case with all horns of this type?" Pretty much so, you can get about a decade (10:1) before they start beaming on the top end. If you want wide range without beaming, you will need to design a Constant Directivity type horn. 1 Quote Link to comment Share on other sites More sharing options...
totalcomfort Posted May 14, 2015 Share Posted May 14, 2015 I am still having problems opening this file, I down loaded the correct one to open it, but when it opens it is just blank?? Quote Link to comment Share on other sites More sharing options...
Arash Posted May 14, 2015 Author Share Posted May 14, 2015 I am still having problems opening this file, I down loaded the correct one to open it, but when it opens it is just blank?? please let me know the exact version of Autocad or Coreldraw you are using and I'll come up with the right file format as soon as possible Quote Link to comment Share on other sites More sharing options...
totalcomfort Posted May 14, 2015 Share Posted May 14, 2015 I am going to the autocad site and downloading the program to the free viewer. they send me a link to my email when it is finished downloading. when I go to the link I can not get any drawings?? Quote Link to comment Share on other sites More sharing options...
kodomo Posted May 15, 2015 Share Posted May 15, 2015 The autocad dwg that Arash has put here works. I got autocad and checked it. Quote Link to comment Share on other sites More sharing options...
cradeldorf Posted May 15, 2015 Share Posted May 15, 2015 I saved the corel file but haven't tried to open it in my illustrator yet. Quote Link to comment Share on other sites More sharing options...
Marvel Posted May 15, 2015 Share Posted May 15, 2015 haven't tried to open it in my illustrator yet. I had an older version of Corel Draw and it didn't like the cdr file. My Illustraor doesn't like it either (from CS 5). Bruce Quote Link to comment Share on other sites More sharing options...
Arash Posted May 15, 2015 Author Share Posted May 15, 2015 haven't tried to open it in my illustrator yet.I had an older version of Corel Draw and it didn't like the cdr file. My Illustraor doesn't like it either (from CS 5). Bruce I exported it with Coreldraw 9. all Coreldraw 9 and upper should be able to open it. hope that helps cf190 plan ver9.zip Quote Link to comment Share on other sites More sharing options...
Marvel Posted May 15, 2015 Share Posted May 15, 2015 I can try it on v. 11 at work... Thanks 1 Quote Link to comment Share on other sites More sharing options...
Marvel Posted October 19, 2018 Share Posted October 19, 2018 33 Quote Link to comment Share on other sites More sharing options...
Schu Posted October 19, 2018 Share Posted October 19, 2018 1 hour ago, Marvel said: 33 Quote Link to comment Share on other sites More sharing options...
Marvel Posted October 19, 2018 Share Posted October 19, 2018 Must have been... I don't even remember posting the above '33' I was probably working on something else and the cursor was in the wrong window. Quote Link to comment Share on other sites More sharing options...
michaeldoherty53 Posted February 28, 2021 Share Posted February 28, 2021 Hi: I'm new! I built a pair of these a couple of years back. I am not an audio-guy nor a skilled cabinet-maker, don't have any fancy tools and no workshop! Regardless, I'm very happy with them cosmetically. I had built the bass section of la scalas and loaded them with Yamaha 15" drivers I've had for years. As budget is always an issue as well as is time, I bought "full-range drivers" PA130-8 from Parts Express ($20.00 each). I had a pair of 3 way cross-overs-375/3K. The top end I purchased planar tweeters from Parts Express also. I have no mid to high sound. The "suspect" for me are the mid-range drivers. The "details" state that they for "90 to 15K". The Planar drivers 2K to 26K. Am I missing something other than brain cells and "know-how"? Has anyone got any advice or suggestions regarding "how I can enjoy mid-highs and high frequency" sounds? I feel desperate having spent so much time building the Edgar horns. Quote Link to comment Share on other sites More sharing options...
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