Said it many times before and I’ll say it again……..nothing and I mean NOTHING sounds as good as a ribbon from 4khz on up. Yes yes yes the vertical listening window is smaller than 20 degrees…..but if we’re talking critical hifi who cares?….sit down, listen and enjoy!
This is where I never really understood the home horn crowd……all of those resonances working against each other is exhausting……Gedlee identified it straight on from the get go and stuffed foam inside to diffuse them…..what a hassle. These are your personal spaces…..so TREAT them as such with some mild acoustical solutions on the walls where needed……..ceiling too need be…..unless you use a planar midrange…..then you don’t have to worry about the floor or ceiling.
Getting a better horizontal DI than this isn’t likely…..just sayin
This is where I never really understood the home horn crowd……all of those resonances working against each other is exhausting……Gedlee identified it straight on from the get go and stuffed foam inside to diffuse them…..what a hassle. These are your personal spaces…..so TREAT them as such with some mild acoustical solutions on the walls where needed……..ceiling too need be…..unless you use a planar midrange…..then you don’t have to worry about the floor or ceiling.
Getting a better horizontal DI than this isn’t likely…..just sayin
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Hi, you are repeating old knowledge which is not true today. On a good waveguide there is no resonances at all, you could make good waveguide for a ribbon as well, or for a dome tweeter, just like it is traditionally made for a compression driver. Yeah, you, simulate and shape optimize it on your own, with your home computer using free tools and eventually manufacture with a desktop printer to a high precision, and get as high performance as you had patience to strive for. So, a waveguide could be bad one, like flat baffle with sharp edge or a resonant trumpet horn, or better one like shape optimized for whatever, they are not all the same.
I'm confused why you would believe you require a flat impedance, unless you have some special amplifer in mind?
Blue- DFM2335-R00-08 in free air.
Green- In SB Audience H225 horn.
Note the logarithmic scale- that shows everything, warts and all.
Here it is again, on what appears to be a FaitalPRO LTH142 horn ?
( left vertical axis- impedance is
"with LTH142 test horn”)
A different view:
Reference:
https://www.products-peerless.com/en/transducer/438
On a Advanced horn, I wonder if it would be even better…
Green- In SB Audience H225 horn.
Note the logarithmic scale- that shows everything, warts and all.
Here it is again, on what appears to be a FaitalPRO LTH142 horn ?
( left vertical axis- impedance is
"with LTH142 test horn”)
A different view:
Reference:
https://www.products-peerless.com/en/transducer/438
On a Advanced horn, I wonder if it would be even better…
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If Earl had access to simulation FEM/BEM software, I would think he would refine his speakers even further.
Here the early Nathan model-
Reference:
https://3d3a.princeton.edu/gedlee-nathan
New Summa-
Smoothness and directivity only got better!
Reference:
http://www.gedlee.com/Loudspeakers/NS15.aspx
Ribbon tweeter- yes good too-
Fountek NeoCD3.0 on 8.75” wide baffle, with LR2 4KHz crossover:
Reference:
https://www.htguide.com/forum/forum...wg-horns-baffled-or-naked?p=950787#post950787
As used in Statements:
Reference:
https://www.htguide.com/forum/forum...wg-horns-baffled-or-naked?p=951101#post951101
Controlled directivity.
Surprising?
Perhaps why the ribbon sounds good from 4KHz up?
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LaVoce DF10.101LS on Celestion H1SC-8050 horn:
Used that combo with good success in my Flex-8 designs, requires only a simple 2nd order highpass and l-pad to give nearly +-1dB.
Used that combo with good success in my Flex-8 designs, requires only a simple 2nd order highpass and l-pad to give nearly +-1dB.
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I like the shape of that horn.
Any chance to try it in a cabinet where the roundover meets the edge of the horn for a continuous curvature?
I wonder how the horizontal and vertical response would be affected. SWAG? @fluid
Any chance to try it in a cabinet where the roundover meets the edge of the horn for a continuous curvature?
I wonder how the horizontal and vertical response would be affected. SWAG? @fluid
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The shape of the transition from mouth to flat baffle doesn't really lend itself to do much other than what mtg did in his design. The directivity is relatively narrow so baffle edge and shape effects don't dominate as much.
The 1.4" Z009512 looks interesting.
Were there any prices?
I am done trying 1" throat compression drivers only to find they don't do it for me🙂
@mtg90 That impedance sweep on the Lavoce/ Celestion combo looks great. Thats the bottom line litmus test for any CD + WG. You don't want any bumps in the area above the primary Fs. The upper end behavior is equally important and shouldn't have a sharp elevated peak above rolloff. The only drawback to that Lavoce CD is the VC dia. It should translate into a higher upper end limit than most other CDs with 1.5 - 1.75" VCs.
Why the importance placed on if there are bumps? Who cares! You can always drop in impedance compensation to help smooth them out if you want.
Rob 🙂