Regarding woofer entry point being close to the throat, i have 2 questions.
1. Is it not important that the angle at which opposite entry points 'see' each other is not 0? I mean they should not fire one to another. But if entry points are moved further to the mouth, because of the tractrix expansion, the entry points will not fire one to another, but more directed to the mouth. Is this a valid question?
2. Also, being close to the throat, will there be a pressure applied to the mid cone? Can this pressure influence the mid sound quality? Is this a valid question?
Thanks!
1. Is it not important that the angle at which opposite entry points 'see' each other is not 0? I mean they should not fire one to another. But if entry points are moved further to the mouth, because of the tractrix expansion, the entry points will not fire one to another, but more directed to the mouth. Is this a valid question?
2. Also, being close to the throat, will there be a pressure applied to the mid cone? Can this pressure influence the mid sound quality? Is this a valid question?
Thanks!
I think that is a valid concern of not wanting woofers to modulate full range mid/tweet. Hence putting woofers closer to mouth helps reduce this - and aiming holes towards the front is something that naturally happens due to woofer being mounted at an expanding horn wall angle - and I think it is a good thing.
Faseplug test done, raw measurement, and I discover when big motor, slit can smaller and extension go further in hf, however making two rings can let it go to 5 Khz. Getting to 20 khz with a cone speaker is a little to positive thinking, but with a K tube it can do, and if high crossover, tube can be small injecting easely in horn.
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Nice work Kees! Looks like you may be going down the Trynergy/K-tube route then? I think it would sound very nice.
Yes I go try yhat. and so our threat gets full of tryouts attracting people.
I have jowever also other work so I am not that fast.
regards
90x40 , 2" throat : horn with beautifull plan sides 🙂 for port injection !
90 is wider but if your room is 4 to 5 meters width, it should be ok ! XO is 400 Hz, it should allow a XO at around 800... manageable for a fast Trynergy design yet !
In the spirit of what BRYTT showed (near reference : 4525 instead 4528)
http://www.p-audio.co.uk/pdf/PH_4525.pdf,
the 10F is still 6 cm cone + rubber, so need some circular gaskett to adapt to the 2" throat... I'm trying to find toilett gasketts .... or maybe a big plastic funnel for bottle to cut it in the middle for the smooth throat transition.... They are calling the men in white when I walk in the kitchen aera of the supermarkets with my meter to measure the diameter of the funnel and the salad bowl ! Crazy hobby ! I didn't say my last word with foam either !
90 is wider but if your room is 4 to 5 meters width, it should be ok ! XO is 400 Hz, it should allow a XO at around 800... manageable for a fast Trynergy design yet !
In the spirit of what BRYTT showed (near reference : 4525 instead 4528)
http://www.p-audio.co.uk/pdf/PH_4525.pdf,
the 10F is still 6 cm cone + rubber, so need some circular gaskett to adapt to the 2" throat... I'm trying to find toilett gasketts .... or maybe a big plastic funnel for bottle to cut it in the middle for the smooth throat transition.... They are calling the men in white when I walk in the kitchen aera of the supermarkets with my meter to measure the diameter of the funnel and the salad bowl ! Crazy hobby ! I didn't say my last word with foam either !
Eldam,
Design it in 3d and have it printed by a local 3d print service. Really might not be that expensive.
https://www.3dhubs.com/paris
http://www.sculpteo.com/fr/
http://www.impression-3d.com/
Download Google Sketchup to make 3d STL files.
Design it in 3d and have it printed by a local 3d print service. Really might not be that expensive.
https://www.3dhubs.com/paris
http://www.sculpteo.com/fr/
http://www.impression-3d.com/
Download Google Sketchup to make 3d STL files.
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X,
If only I was as skilled and smart as you !😀
Ok, bi-radiall off topic in an hypex thread... it was more for the full range behavior I linked it in the spirit of what BYRTT linked me above (towards your Bookshelves thread in the MW forum)
Too bad a cheap plastic funnel for a throat lense from round to square shape....🙁
Softs are one thing, theory is an other one, I have more to learn theory than sketching I believe !
.
Well maybe BYRTT will like this horn reference...
If only I was as skilled and smart as you !😀
Ok, bi-radiall off topic in an hypex thread... it was more for the full range behavior I linked it in the spirit of what BYRTT linked me above (towards your Bookshelves thread in the MW forum)
Too bad a cheap plastic funnel for a throat lense from round to square shape....🙁
Softs are one thing, theory is an other one, I have more to learn theory than sketching I believe !
.Well maybe BYRTT will like this horn reference...
I did not use any theory to model my transition adapter in the other thread - aimed for smooth gradual variation in cross section vs distance. Used a two curved spline segments to model the curve and swept it a surface of revolution to create solid model. Transition from dia slightly bigger than surround to throat dia of horn. Took 3 tries (med, short, long) before got it right.
Hi All
Erik has change the software for me so I have only 25 lines horn flare, this is a lot more easy but less precise, however that is not a problem.
For akabak this is now also more easy working on the horn.
For diy use it may be used, commercial you need to ask Erik.
regards
Erik has change the software for me so I have only 25 lines horn flare, this is a lot more easy but less precise, however that is not a problem.
For akabak this is now also more easy working on the horn.
For diy use it may be used, commercial you need to ask Erik.
regards
That is very nice - much more manageable now. I was wondering who Erik was, but that is E. Forker, aka Volvotreter. 🙂
Thanks for getting him to make a simplified sheet.
Thanks for getting him to make a simplified sheet.
He is very interested in your threats, I have email kontakt with him, and he lives not vary far from me also, He did mention that also.
So we never nows I gonne meet him some day.
It was very nice of him to change that, it is so much more easy.
kees
"threats" involve violence and harm "threads" are things you read on the internet...
sorry for correcting your english.
sorry for correcting your english.
Yes I like to threat.
sorry, always I make that error because it looks almost the same.
it is thread, with the DDD.
Erik go also make the outpout in meters and a extra row for the akabak L1 L2 etc
if that is possible. Changing the calculation formulas for example..
so we have a nice way to save time and experiment more.
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kees52,
Regarding k-tube weltersys have some comments in this thread starting at post 62 http://www.diyaudio.com/forums/mult...te-ijits-guide-danley-tech-7.html#post4613790 that maybe will interest you.
Regarding k-tube weltersys have some comments in this thread starting at post 62 http://www.diyaudio.com/forums/mult...te-ijits-guide-danley-tech-7.html#post4613790 that maybe will interest you.
Hi All and X
I have still work together with Erik to change the program for akabak, almost done, and I have test a piece of the output.
X I presume this is oke?, you are experienced with akabak, I do learn a little now, but it is needed to play with it from time to time, otherwise I forget.
I have use the total cubic meter row in the table for use it, and the table for akabak kan be pasted in akabak in one go, that is far less time consuming, also the sections are automatic calulated, nice to make akabak work more easy.
If you see errors X let me now and explane it also. because L1 was 0,0000 I have remove that making that on the end I get one over, but it is good because everything is in the table.
But look at it and advise me when needed, thanks.
regards
kees
I have still work together with Erik to change the program for akabak, almost done, and I have test a piece of the output.
X I presume this is oke?, you are experienced with akabak, I do learn a little now, but it is needed to play with it from time to time, otherwise I forget.
I have use the total cubic meter row in the table for use it, and the table for akabak kan be pasted in akabak in one go, that is far less time consuming, also the sections are automatic calulated, nice to make akabak work more easy.
If you see errors X let me now and explane it also. because L1 was 0,0000 I have remove that making that on the end I get one over, but it is good because everything is in the table.
But look at it and advise me when needed, thanks.
regards
kees
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Hoy X
Erik has almost done it, these is for the round horn in free air, and go set also on the rectangle horns.
Just a extra table for akabak. The waveguides however can not be done automatically.
But we have already win a lot time and less change for errors.
Need only to set wall or corner in akabak.
and I can go on.
X can you please check if this is right, using cm2 to meters conversion in akabak table, I now we have to put also in the ; in S1T and S1M table but that is easy.
regards
Erik has almost done it, these is for the round horn in free air, and go set also on the rectangle horns.
Just a extra table for akabak. The waveguides however can not be done automatically.
But we have already win a lot time and less change for errors.
Need only to set wall or corner in akabak.
and I can go on.
X can you please check if this is right, using cm2 to meters conversion in akabak table, I now we have to put also in the ; in S1T and S1M table but that is easy.
regards
