Dendritic waveguides

Mach5 · 24th April 2009, 08:28 PM

Does anybody know what the principle is supposed to be behind Turbosound's "dendritic" waveguides?

At first look it seem like it might be similar to Tom Danley's "shaded amplitude lens"

See thread:
I Don't Understand.

At a second look it seems there is an extra "snake loop" put in the path of the center of the guide getting a shorter path towards to edge

Some kind of mechanical delay?

I cannot even guess why someone would try to do that. What's the advantage? Won't you just mess up your HF with extra reflection?

BHTX · 24th April 2009, 08:47 PM

yuck?

Brett · 24th April 2009, 09:15 PM

It would keep all the paths from the throat to the 'mouth' the same, so they all arrive at the same time and form a planar wavefront for stacking in line array PA systems.

gedlee · 25th April 2009, 02:50 AM

Brett is correct. But there are much easier ways - but they don't look as "cool". And we all know that in audio "looks" is half the goal.

"Paths" means "path lengths" I don't see what insures that the amplitudes will be constant, only the phases.

Brett · 25th April 2009, 02:58 AM

Quote:

Originally posted by gedlee
"Paths" means "path lengths"

That is what I meant, but I'm not usually coherent on the morning of ANZAC day.

Mach5 · 30th April 2009, 03:58 AM

Brett,

I just noticed your avatar, Does this imply you have some experience with unity horns?

Would you mind if I PM a few questions?

Brett · 30th April 2009, 11:33 AM

Sure, I have some Unity's but they are not in use yet. My projects evolve at a glacial rate. I have heard William Cowan's system and it is the best I have ever heard.

I am moving this w/e and hope to have the project finished in the coming weeks.

Mach5 · 30th April 2009, 04:35 PM

Quote:

Originally posted by Brett
Sure, I have some Unity's but they are not in use yet. My projects evolve at a glacial rate. I have heard William Cowan's system and it is the best I have ever heard.

I am moving this w/e and hope to have the project finished in the coming weeks.

Good luck with the moving! (Is it always lucky when moving to the lucky country?)

I tried to PM you with no success, maybe when you get done moving you can email me

This is my forwarding email I use in public places(like forums)
bngspamline aht gmail.com

Thanks in advance

24th April 2009, 08:28 PM	#1
Mach5 diyAudio Member Join Date: Apr 2009	Dendritic waveguides Does anybody know what the principle is supposed to be behind Turbosound's "dendritic" waveguides? At first look it seem like it might be similar to Tom Danley's "shaded amplitude lens" See thread: I Don't Understand. At a second look it seems there is an extra "snake loop" put in the path of the center of the guide getting a shorter path towards to edge Some kind of mechanical delay? I cannot even guess why someone would try to do that. What's the advantage? Won't you just mess up your HF with extra reflection?

25th April 2009, 02:50 AM	#4
gedlee diyAudio Member Join Date: Dec 2004 Location: Novi, Michigan	Brett is correct. But there are much easier ways - but they don't look as "cool". And we all know that in audio "looks" is half the goal. "Paths" means "path lengths" I don't see what insures that the amplitudes will be constant, only the phases. __________________ Earl Geddes Gedlee Website Read about the highly acclaimed Geddes loudspeakers

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24th April 2009, 08:47 PM	#2
BHTX diyAudio Member Join Date: Feb 2006	yuck?

24th April 2009, 09:15 PM	#3
Brett diyAudio Member Join Date: Jan 2002	It would keep all the paths from the throat to the 'mouth' the same, so they all arrive at the same time and form a planar wavefront for stacking in line array PA systems.

30th April 2009, 03:58 AM	#6
Mach5 diyAudio Member Join Date: Apr 2009	Brett, I just noticed your avatar, Does this imply you have some experience with unity horns? Would you mind if I PM a few questions?

30th April 2009, 11:33 AM	#7
Brett diyAudio Member Join Date: Jan 2002	Sure, I have some Unity's but they are not in use yet. My projects evolve at a glacial rate. I have heard William Cowan's system and it is the best I have ever heard. I am moving this w/e and hope to have the project finished in the coming weeks.

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