The Axi2050 would do very well behind that deeeep horn.
Impedance matching "to die for".
A bit smaller: Bjørn Kolbrek's Mid Horn as demoed during ETF 2017.
This comment was posted on another forum:
"The new Celestion drivers were part of our system, and the mid horn is a design by Bjørn Kolbrek and Thomas Dunker, and has nothing to do with WE as such. The Celestion drivers are very good, much better than the (Altec)288. Bjørn Kolbrek works at Celestion, so he arranged the loan of the drivers, they went straight back to Celestion after the festival."
Impedance matching "to die for".
A bit smaller: Bjørn Kolbrek's Mid Horn as demoed during ETF 2017.
This comment was posted on another forum:
"The new Celestion drivers were part of our system, and the mid horn is a design by Bjørn Kolbrek and Thomas Dunker, and has nothing to do with WE as such. The Celestion drivers are very good, much better than the (Altec)288. Bjørn Kolbrek works at Celestion, so he arranged the loan of the drivers, they went straight back to Celestion after the festival."
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"Because the horn equation is not able to predict the interior and exterior sound
field for horns other than true 1P horns, it has been much criticized.
It has, however, been shown that the approximation is not as bad as you might think in the first instance.
Holland has shown that you can predict the performance of horns of arbitrary shape by considering
the wave-front area expansion instead of the physical cross-section of the horn."
field for horns other than true 1P horns, it has been much criticized.
It has, however, been shown that the approximation is not as bad as you might think in the first instance.
Holland has shown that you can predict the performance of horns of arbitrary shape by considering
the wave-front area expansion instead of the physical cross-section of the horn."
In France Hollande was the president elected in 2012 and no one believed in his victory (even the most talented in predictions).
He won thanks to a diet a lot of jokes.
He have chosen the expo because of the higher resistive loading IMHO.
Here's the story behind the Kolbrek-Dunker horn.
I'd like to think audio engineering is devoid of political theatre.
I'd like to think audio engineering is devoid of political theatre.
Thanks a lot Ro808, appreciated.
Are you aware if drawings exist for these kind of horns ? Also is it possible to model in Hornresp ?
Jean-Louis
I've never seen drawings of the Community horns, except for the illustrations in the specsheets.
Once you've made a drawing you should be able to simulate it in HornResp.
There's a dedicated HornResp thread and David McBean is a very helpful and knowledgeable person.
If you have to make large diffraction horns you'll probably want to clone (and possibly modify) the best of its kind.
These THX horns were made to order by Community for TAD around the year 2000.
Still of the "hard diffraction" type, but the slot is obviously less constricted (wider) compared to the other TAD labeled Community PC 294, a few pages back. You can see the entire entrance from the front and there's some smoothing between the walls.
There's a dedicated HornResp thread and David McBean is a very helpful and knowledgeable person.
If you have to make large diffraction horns you'll probably want to clone (and possibly modify) the best of its kind.
These THX horns were made to order by Community for TAD around the year 2000.
Still of the "hard diffraction" type, but the slot is obviously less constricted (wider) compared to the other TAD labeled Community PC 294, a few pages back. You can see the entire entrance from the front and there's some smoothing between the walls.
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No, even though the edges at the lips look similar.
I found this horn in een shop somewhere in South America. Argentina or Brasil I believe.
This is probably a locally produced horn, because a large wholesaler of Chinese stuff didn't recognize it.
It's very cheap, at least compared to similar sized horns on this side of the pond.
I found this horn in een shop somewhere in South America. Argentina or Brasil I believe.
This is probably a locally produced horn, because a large wholesaler of Chinese stuff didn't recognize it.
It's very cheap, at least compared to similar sized horns on this side of the pond.
Once you've made a drawing you should be able to simulate it in HornResp.
There's a dedicated HornResp thread and David McBean is a very helpful and knowledgeable person.
If you have to make large diffraction horns you'll probably want to clone (and possibly modify) the best of its kind.
These THX horns were made to order by Community for TAD around the year 2000.
Still of the "hard diffraction" type, but the slot is obviously less constricted (wider) compared to the other TAD labeled Community PC 294, a few pages back. You can see the entire entrance from the front and there's some smoothing between the walls.
Thanks Ro808
The only drawing I got until now is Klipsch K402 which seems nice, and Renkus Heinz CBH 250-6, unfortunately the long throw. How do you think it should compare to these ? Seem it has not these diffraction slots, is it still CD ?
I am aware of HornResp thread, but few things about these big horns I am interested in for my RH5600.
Best
Jean-Louis
I was talking about this one.
I believe that's a plastic copy of the Selenium HL4750-SLF (which is inspired by a JBL fiberglass Bi-Radial horn).
Selenium is a defunct Brazilian speaker manuf, it was bought off by JBL Pro.
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(ABS) Clones of these are widely available in your country for much less money than the original, which is ridiculously expensive considering the build quality.
This one doesn't look bad either:
This one doesn't look bad either:
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Yes.
That one looks quite nice. What is it?
I want to find a good 8" 90x60 degrees horn to replace my current JBL 6x6 PT waveguide, so I can cross my JBL 2408H lower to mate my B&C 8PS21 better.
That one looks quite nice. What is it?
I want to find a good 8" 90x60 degrees horn to replace my current JBL 6x6 PT waveguide, so I can cross my JBL 2408H lower to mate my B&C 8PS21 better.
The mouth circumference of the horn with the small slot is even bigger than that of the PC horn.
90x60 degrees and a nice HxW ratio, which combined with the slot, should result in decent coverage.
Theoretically, it's polars should beat the ones below (from the ZXPC 18x10), especially in the vertical plane.
90x60 degrees and a nice HxW ratio, which combined with the slot, should result in decent coverage.
Theoretically, it's polars should beat the ones below (from the ZXPC 18x10), especially in the vertical plane.
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