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Multi-Way Conventional loudspeakers with crossovers

Yuichi A290 CAD plans
Yuichi A290 CAD plans
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Old 30th November 2018, 10:24 AM   #11
Zvu is offline Zvu  Serbia
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It looks like this:

stirodur finish res.jpg linear z top finish.jpg spremna za smirglu.jpg front1 res.jpg

adapter stock3 res.jpg adapter test res.jpg
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Old 30th November 2018, 10:46 AM   #12
marco_gea is offline marco_gea  Italy
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Cool!
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Old 30th November 2018, 11:00 AM   #13
Zvu is offline Zvu  Serbia
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Yes. Throats have the smoothest transition from square to circle i have seen so far.
Attached Images
File Type: jpg back adapter res.jpg (178.8 KB, 537 views)
File Type: jpg adapter2res .jpg (259.1 KB, 535 views)
File Type: jpg adapter1res.jpg (260.2 KB, 533 views)

Last edited by Zvu; 30th November 2018 at 11:04 AM.
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Old 30th November 2018, 11:15 AM   #14
marco_gea is offline marco_gea  Italy
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Oh, I see he modified the throat adaptors to use the TAD 4002z drivers, which are 1.5". That's cool - hopefully he calculated the expansion properly, to maintain the same Fc = 290Hz and T = 0.7 as the horn itself.
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Old 30th November 2018, 02:43 PM   #15
barackuda is offline barackuda  Slovakia
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Yes like a group buy. I just have to get a pair made and see how much he will charge me. Ive asked him for a price esrimate from solid hardwood, birch ply and HDF as a budget option. Once He has the process nailed, he can let me know the price for a batch manufacturing

Danny
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Old 30th November 2018, 02:45 PM   #16
barackuda is offline barackuda  Slovakia
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Quote:
Originally Posted by Zvu View Post
He's trolling. Just ignore.

So, this would be a group buy ?

I may be able to help with cad files. I'll check with a guy i know made A290 on his cnc.
Thanks for the offer. I have a guy working on the cad files. I dont want to use somebody elses plqns withou his consent. It take a lot of time to make them, dont wanna be a leach on somone elses work
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Old 5th December 2018, 09:14 PM   #17
barackuda is offline barackuda  Slovakia
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So I was able to create a 3D exported file from Sketchup, easily opened in 3D Print program in Windows. Looks bloody good if I say so my self now off to the manufacture with it (he requested specific file type for his CNC router) which I was able to do with this easy to use 3d program.
Ill let you know, if he accepts the file. What Im afraid of is the polygons instead of a perfect circle, might mean there will be some sanding involved.
Also I went for a horn with straight and curved sides, dont know which one is it, but the first part is straight, and close to the throat its curved, same as TAD TH4001. The curve in horizontal (sides) is within 5% of the original plan, curve in the vertical (top and botom pieces) is within 6%, my best guesstimate. I dont think Yuichis measurement with hand on a finished TH4001 were that precise, some margin for error sure must be included.
Anyway, hopefully the manufacturer will be able to make me a mockup from foam first. Then comes the wood model.

Danny

Last edited by barackuda; 5th December 2018 at 09:16 PM. Reason: spelling
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Old 6th December 2018, 12:55 AM   #18
barackuda is offline barackuda  Slovakia
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Default First STL 3D model

Little teaser....
Hope it displays correctly

Danny


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Old 6th December 2018, 01:32 AM   #19
kevinkr is offline kevinkr  United States
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Yuichi A290 CAD plans
Following, trying to figure out if it is practical and if so how get a pair of the A-290 made here. Knocked down CNC'd parts might not be too bad to ship. (Final assembly done by the buyer.)
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Old 9th December 2018, 09:04 PM   #20
Chris Koerbel is offline Chris Koerbel  Germany
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I am Not uninterested... how far Are you, Danny?
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