Search for "Dayton H12RW".
This appears to be a blown up version of that 12" horn that was discontinued about 10 years ago.
If you mean a 2-way system (including this horn) that should play from 300 Hz that's okay, but you can't cross this horn at 500 Hz in any way.
Even 1200 Hz is very optimistic.
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Rather interesting is this horn, offered by the same seller, that appears to be a modified variant of the Renkus Heinz CCH1000/94 (Complex Conic Horn), or inspired by Coda's (BMS) horns.
Even the original RH versions - with sharp-edged diffraction slot, sound pretty good, are constant directivity without pattern flip.
The slot of this horn seems inspired by the JBL waveguides with a smooth transition to the mouth.
Even the original RH versions - with sharp-edged diffraction slot, sound pretty good, are constant directivity without pattern flip.
The slot of this horn seems inspired by the JBL waveguides with a smooth transition to the mouth.
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In a baffle that is large enough (> 30 cm wide), this horn might be used from 1000 Hz. The response will of course be a bit wrinkly.
interesting discovery, if you follow the shape of the grain pattern, you can see that the throat is not round at all.. its is something like a diamond shape with rounded corners...
What do you guys think about this?
Diffraction from the narrow dimension will increase high frequency dispersion compared to the wider dimension, less "beaming" horizontally.
My first thought was the throat of my Jbl 2385. Taller than wider also... The shape's are not the same though...
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@mabat @fluid @Ro808 @docali @weltersys @DonVK @gedlee
Have you guys experimented with this type of shape before?
How constant would you call this? Mic at 1 meter,10dbscale, with measurements at every 10 degree's....So the green line is 30 degrees.....isn't that about down10db? Does this not fit within the constant directivity category?
This pattern is wider than the HvDiff...by a long shot.
Have you guys experimented with this type of shape before?
How constant would you call this? Mic at 1 meter,10dbscale, with measurements at every 10 degree's....So the green line is 30 degrees.....isn't that about down10db? Does this not fit within the constant directivity category?
This pattern is wider than the HvDiff...by a long shot.
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I have not personally experimented with that type of throat constriction, but it looks fairly similar to the EighteenSound XR2064.
Not too different in concept to some of the smoother R.H. Complex Conic Horns.
Art
Not too different in concept to some of the smoother R.H. Complex Conic Horns.
Art
The transition of the XR2064 and 1496 comprises a (net) constriction, while Camplo's horn initially expands faster in the vertical plane up to the mouth section.
It's more of a stretched variant of the XT1086 - with a gradual transition, hence the diamond shape. (image courtesy of P. Bateman).
It's more of a stretched variant of the XT1086 - with a gradual transition, hence the diamond shape. (image courtesy of P. Bateman).
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If looking for the 20khz cutoff we'd start at its position that is down -6db? Then I'd look at 14-16khz....Then I would look at 700-7000k....
Is it me or isn't this a pretty wide pattern for such a large horn, at 1m.
Is it me or isn't this a pretty wide pattern for such a large horn, at 1m.
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I have to switch to German:
"was wahr war, war wahr, ist wahr und wird wahr sein." and "wer viel misst misst viel Mist" 😱😉
lol an extremely long Tractrix horn is a CD horn... you made my day! 😱
"was wahr war, war wahr, ist wahr und wird wahr sein." and "wer viel misst misst viel Mist" 😱😉
lol an extremely long Tractrix horn is a CD horn... you made my day! 😱
I've never seen a tractrix horn with a throat like this....have you? The measurements, if trust worthy, are, what they are.....
I know you have plenty of other horns outside of the hvdiff....but by chance I have this horn...how's the above polar rank up?
Maybe you can display some graphs to show how good it can be, for horns that have a ~150hz cutoff?
I know you have plenty of other horns outside of the hvdiff....but by chance I have this horn...how's the above polar rank up?
Maybe you can display some graphs to show how good it can be, for horns that have a ~150hz cutoff?
I superimposed some graph lines to try and split up the original 10db graph lines.
On that graph at 1m between 2K and 6K the response has a fairly even fall off with angle but I suspect the DI will be rising and not constant. It's not normal to want to listen to and measure a horn of that size at 1m so many other comments may not take that into consideration.
I probably did make a shape like that with Ath but I haven't pursued it as if I was to change the horizontal and vertical angles it would be to make the horizontal wider than the vertical not the the other way around.
vs
The throat on my Jbl 2380a definitely opens up wider, faster, on the vertical plane....It definitely has a wider horizontal polar...what gives.
Is there a way to discern slot size vs spectrum that it will effectively diffuse? I guess looking at the off axis responses probably answers that question somewhat?
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