Ever think of building a Cornu Spiral horn? Now you can! - Page 52 - diyAudio
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Old 30th January 2013, 12:05 AM   #511
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Cool, Thanks. Looks like it is pretty close to your calculations then, just with an additional layer/divider.
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Old 30th January 2013, 08:06 PM   #512
rock12 is offline rock12  United States
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I posted on another thead but this is where I should be. I have the W3-315e(tangbang) in a 24" cornu 4" thick(10.2C) and a throat of 1.6centimeters though in building it came out slightly bigger. Polyfill is new to me where is a good amount to start and how dense of a wad. For some reason posting pics is escaping me is there a certain procedure
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Old 30th January 2013, 08:14 PM   #513
xrk971 is offline xrk971  United States
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Rock,
I have often considered the W3-315e - nice aluminum cone driver. You can start with just stuffing the driver chamber with a good amount (uncompressed fluffed state about 3x the volume of the chamber). It is easy to adjust to taste. If you think there is still too much coming through the horn mouths you can try adding a very small amount into the throats using a small wire tool to poke and prod it into place. Make sure you leave some of it exposed so that you can pull it out with a hook if it is too much.

Posting pictures sometimes requires using the right browser. I cannot do it in Chrome on an Android but Firefox works fine. The text editing on Firefox sucks so I end up using two browsers to achieve what any single browser in Windows can achieve. You need to go to "Advanced" and choose "Manage Attachments".
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Old 30th January 2013, 09:03 PM   #514
rock12 is offline rock12  United States
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your work on this is amazing Building this is so quik and rewarding. I thank you again for all your posts. keep it up it inspire's us all
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Old 30th January 2013, 09:52 PM   #515
xrk971 is offline xrk971  United States
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Thanks for the kind words Rock. I am glad that I can spread the joys of spiral horns and foam core speakers on this forum, and that people are willing to give it a try. I am glad it worked out for you, looking forward to photos of your build. How does it sound?
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Old 30th January 2013, 10:04 PM   #516
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Speaking of spirals, check this out. JRKO posted it in another thread.
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File Type: png Screen Shot 2013-01-30 at 3.02.22 PM.png (934.5 KB, 469 views)
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Old 30th January 2013, 10:09 PM   #517
xrk971 is offline xrk971  United States
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OMG! Is that stage a giant cornu the size of a dance floor?
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Old 30th January 2013, 10:11 PM   #518
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Quote:
Originally Posted by xrk971 View Post
Kimbo,
The size room you describe is probably too small for a 20 inch cornu.
Hogwallies! The bigger the better! Don't listen to him Kimbo, his ears are probably in decent shape. Not like those of us who spend their time on the water listenin' to all that whistle blowin' and stuff.
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Originally Posted by rock12 View Post
For some reason posting pics is escaping me is there a certain procedure
Instead of hitting 'quick reply', use 'post reply' and then go down to 'manage attachments' as X has mentioned.
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Originally Posted by rock12 View Post
your work on this is amazing Building this is so quik and rewarding. I thank you again for all your posts. keep it up it inspire's us all
So true.
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Old 31st January 2013, 12:08 AM   #519
rock12 is offline rock12  United States
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pic I hope. if it works I will update
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Old 31st January 2013, 12:11 AM   #520
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Good work.
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