heart 21" scoop design

7 years 5 months ago #19937 by Reality Sound
Replied by Reality Sound on topic Re: 21" scoop design
A quick A/B test won't take long...... :whistle:
probably the way forward.

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7 years 5 months ago #19938 by tony.a.s.s.
Replied by tony.a.s.s. on topic Re: 21" scoop design
You could always make a graduated curve to ensure constant and logical expansion.

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7 years 5 months ago #19939 by Reality Sound
Replied by Reality Sound on topic Re: 21" scoop design
Out of what material? Bend lots of THIN ply glued together?

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7 years 5 months ago #19940 by tony.a.s.s.
Replied by tony.a.s.s. on topic Re: 21" scoop design
You could use Flexi-Ply, the same material I have used on my new monitors. 2 bits of 8mm would do it.

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7 years 4 months ago #19954 by Reality Sound
Replied by Reality Sound on topic Re: 21" scoop design
How noticable if any would the difference be? Nowadays scoop builders seem to be even making the scoopy bit out of 3 or so straight bits?

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7 years 4 months ago #19955 by bgrade
Replied by bgrade on topic Re: 21" scoop design
In theory, all of the corners suck up a little energy and cause a little distortion, but I have no idea how noticeable it would be. If I nominated someone to test it and see how big of a difference it makes, it would have to be you my friend. ;)

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7 years 4 months ago #19956 by Reality Sound
Replied by Reality Sound on topic Re: 21" scoop design
Hmmmmm........ :whistle:
Not that I wouldn't do testing to see.......but it's not going to happen with this project.
I have bookings for this system already and I haven't built it yet :ohmy:
Ply delivered tomorrow & drivers on their way.........

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7 years 4 months ago #19960 by Dref
Replied by Dref on topic Re: 21" scoop design
Oh have done that to much my self, hiring out before I am done with the system. Can be seriously stressful when something goes wrong, and something usually does.

The smoothness of the bend will actually be more important in the throat section than in the last "scoop" section.
I still think that the two part corner is the best compromise if you don't have Flexi-ply laying around. But if you have to hurry, the jbl-style corner will also be fine. In the end its only marginal differences in the sound with these long wavelengths. If it had to be a Hi-Fi "full range" scoop the smoothness of the throat section would be quite important.

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7 years 4 months ago #19961 by Reality Sound
Replied by Reality Sound on topic Re: 21" scoop design
These definitely don't have to be hi-fi :P
Promoters here are only after SPL :lol:

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7 years 4 months ago #19963 by Dref
Replied by Dref on topic Re: 21" scoop design
I would be surprised if the difference in SPL were significant. So I say choose the corner style you feel for, in the end its your scoop. ;)

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