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Multi-Way Conventional loudspeakers with crossovers

DrBA horns at sphericalhorns.net
DrBA horns at sphericalhorns.net
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Old 13th August 2019, 06:51 PM   #11
johnsurnamerobinson is offline johnsurnamerobinson
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Looked at your new site very interesting.Glad you describe known horn issues so well.I think that like most enthusiasts on this site I would like to see some examples built using your methodology,So I wish you all the very best.
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Old 13th August 2019, 09:05 PM   #12
docali is offline docali  Germany
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Don't worry about the math. I have tried to discuss this with an empty VBA sheet but it insisted to get programmed in the right way

There are three early tester out here and I think that the sheet is quite easy to use and has an iterative Flow.

Besides the article some fine tuning is still necessary.
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Old 13th August 2019, 10:24 PM   #13
norman bates is offline norman bates  United States
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so, are you stepping into "stereo lab" like horns for diy ?

Are they tractrix ?

Or spherical (more like avante garde) ?

Those 2 seem real close looking............

Any overlay drawing that can show the difference ?


Is "stereo lab" still selling horns ?
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Old 14th August 2019, 09:24 AM   #14
docali is offline docali  Germany
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My horns are named as DrBA and have only the base formulas in common with SWH or tractrix but as true expansion tractrix. They will be free for private use. Besides this three completely new profiles will be presented.

And no, die nothing in common with stereo Labs!
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Old 14th August 2019, 06:57 PM   #15
astrojet is offline astrojet
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Cool. Danke sehr. Your website provides a clear explanation through a nice logical progression of your work.
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Old 24th August 2019, 09:19 PM   #16
docali is offline docali  Germany
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Hello!

In a few hours the new post about the spherical wave horn (Kugelwellentrichter) will be online. It was written in German because of the reasons described in the post. Using a translator should work well.

So, you will need some time to read all the stuff as I need some more time to prepare the corresponding spread sheet for the community.

Enjoy the post!

As I had no reviewer it would be nice if you could report any identified errors here. Thanks!
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Old 25th August 2019, 03:16 AM   #17
norman bates is offline norman bates  United States
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Nice
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Old 25th August 2019, 11:33 AM   #18
docali is offline docali  Germany
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Dear all!

The first official version of my spread sheet calculator is available here:
Download – Sphericalhorns

I assume that Microsoft® Excel is required as it's VBA code is something different to open source office products.

The main purpose of this calculator is to export a point cloud file. You will need additional tools/programs to generate a printable file!
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Old 25th August 2019, 06:48 PM   #19
planet10 is online now planet10  Canada
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DrBA horns at sphericalhorns.net
Quote:
Originally Posted by docali View Post
The first official version of my spread sheet calculator is available here:
Can it be saved in an older format… and i am pretty sure if it uses VBA it will not run in Excel on a Mac :^(

dave
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community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
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Old 25th August 2019, 07:55 PM   #20
docali is offline docali  Germany
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Yes, this might be the trade-off. Using Excel VBA was a distinct decision and without it I would have never reached this level. I had to buy a license for myself. There are currently no plans to publish an older version of Excel. But so far as I know there exists an offer for a 30 days trial period for office products. And very good that it will not run on a MAC
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