The making of: The Two Towers (a 25 driver Full Range line array) - Page 3 - diyAudio
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Old 9th September 2013, 01:11 PM   #21
xrk971 is online now xrk971  United States
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Quote:
Originally Posted by wesayso View Post

Are you looking for those numbers to do it in foam core? (lol)
I had not thought of it, but now that you say it... You can use -1 inch thick XPS foam sheets (home insulation sheathing) and cut with a hot wire preform (goes real quick). Glue and stack them up then cover with resin and fiberglass like a surfboard. There may be some ease of manufacturing and saving weight here - not to mention built in damping of internal walls.
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Old 9th September 2013, 01:18 PM   #22
wesayso is offline wesayso  Netherlands
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I actually seriously considered building them like that!
A friend of mine opted that solution when I told him my ideas.
But I figured it wouldn't be a bad thing to have a bit of weight in the enclosure.
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Old 9th September 2013, 01:58 PM   #23
KLBIrd is offline KLBIrd  United States
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Sounds like the ultimate foam speaker project. Why not build a short version as a test, say 4 foot tall?
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Old 9th September 2013, 09:48 PM   #24
Jaimo is offline Jaimo  Canada
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Your drawings are amazing - what SW packages do you use?
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Old 9th September 2013, 09:51 PM   #25
xrk971 is online now xrk971  United States
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Wesayso is pretty handy with the 3d modeling isn't he? I asked the same question - Autodesk Inventor. Similar results can be had with Solidworks.
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Old 10th September 2013, 11:42 AM   #26
wesayso is offline wesayso  Netherlands
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Yes X got it right, I have been an Inventor user for what seems forever. I'm an Engineer by trade but got involved in IT due to my interests in programs like Inventor and before that AutoCAD. I was always programming and streamlining the workflow. That's how I ended up in IT.
I have trained my coworkers in Inventor and was their walking encyclopedia .

Here's a short animation made somewhere in 2005 for another hobby project of mine:

Apfelbeck Movie
Click the image to open in full size.
Click to see the picture properly. More on that project here: www.apfelbeck.nl

Last edited by wesayso; 10th September 2013 at 11:52 AM.
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Old 10th September 2013, 04:16 PM   #27
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this is fascinating!
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Old 10th September 2013, 04:30 PM   #28
Jaimo is offline Jaimo  Canada
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Quote:
Originally Posted by xrk971 View Post
Wesayso is pretty handy with the 3d modeling isn't he? I asked the same question - Autodesk Inventor. Similar results can be had with Solidworks.
I followed an electronics track during my studies and only got close to a drawing board for one semester -didn't do very well either. CAD is a foreign concept to me and I am only just starting to play with Draftsight.
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Old 10th September 2013, 06:22 PM   #29
wesayso is offline wesayso  Netherlands
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Inventor isn't that hard to learn. Just need to learn the basics and play with it. I find it very useful for all my hobbies. I also used it for my car audio setup. Here's a waveguide design for a Vifa tweeter:
Click the image to open in full size.

I made that pod to use the Vifa in my car and minimize diffraction. Worked very well. Actually, the great sound I got in my car is the reason I'm building new home speakers!
I printed the above model trough an online printing service.
Click the image to open in full size.
DSP in my Pioneer radio takes care of the crossover and time alignment. The speakers disappear completely leaving you with a great stage that extends beyond the actual car boundaries. It sounds bigger than it is. I hope to achieve that in my living room as well .

But I had Inventor running at home due to my job. It is way to expensive for a home user. If I ever start a business of my own I won't hesitate to buy a license.

Last edited by wesayso; 10th September 2013 at 06:39 PM.
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Old 11th September 2013, 12:20 AM   #30
xrk971 is online now xrk971  United States
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Solidworks is also pretty easy to learn. It is very different than CAD where you draw. Here you make 3d models and the drawings are an automatically generated side benefit. But I agree that these are expensive programs for the home user. Invaluable for visualizing and designing though.
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