I've been looking at some horn options for 600 Hz and up.
Either using a Faital HF146 or a small wide band like the Scan-Speak 10F or Kartesian Wib70_vPA.
For the Faital HF146 I've been looking at some measurements in B&C ME90 and 18Sound XR1464C found here: [Messung] Die grosse 1,4" Messorgie - DCX464/BMS4594/NSD4015N/HF146 @ XT1464/XR1464C/PH-305/ME90/J.Sound/China - Lautsprecherforum.eu
Both of these look fine down to 600 Hz distortion wise.
ME90 gives a flatter response, and the XR1464C has better polars.
Both of these horns are about as large as I can go with regards to WAF 😀
So either I go for a flatter response or better polars..
For the wide band drivers I would probably need to go with a 2 inch exit horn.
Although I expect there would be some cancellation issues without any phase plug.
Either using a Faital HF146 or a small wide band like the Scan-Speak 10F or Kartesian Wib70_vPA.
For the Faital HF146 I've been looking at some measurements in B&C ME90 and 18Sound XR1464C found here: [Messung] Die grosse 1,4" Messorgie - DCX464/BMS4594/NSD4015N/HF146 @ XT1464/XR1464C/PH-305/ME90/J.Sound/China - Lautsprecherforum.eu
Both of these look fine down to 600 Hz distortion wise.
ME90 gives a flatter response, and the XR1464C has better polars.
Both of these horns are about as large as I can go with regards to WAF 😀
So either I go for a flatter response or better polars..
For the wide band drivers I would probably need to go with a 2 inch exit horn.
Although I expect there would be some cancellation issues without any phase plug.
For the Faital HF146 I'll be going with either the XR1464C or ME90.
So it's more of a question of which one. The former has better polars and the latter has better frequency response.
I do have DSP tho, so the response on the XR1464C can be corrected.
The XR1464C seems too small a horn for 600Hz. Isn't it recommended for use above 1.2kHz?
Do you want to cross over at 600Hz? That calls for a large long horn IME. Sure, some horn sellers will tell you "it's good down to 500Hz" but be skeptical, they usually aren't. The XR1464C is small, only 270mm wide and 180mm deep. I would consider that a small horn.
Do you want to cross over at 600Hz? That calls for a large long horn IME. Sure, some horn sellers will tell you "it's good down to 500Hz" but be skeptical, they usually aren't. The XR1464C is small, only 270mm wide and 180mm deep. I would consider that a small horn.
Looking at the measurements posted in the first thread, they provide loading down to about 600 Hz before dropping like a rock. That's also where distortion starts to rise.
I don't find loading or distortion to be very interesting, of course I don't ignore significant distortion, but within reason...
On the other hand I find them very important to my listening experience and the realism of the sound. Perhaps modern engineering has bent the laws of physics, but I remain skeptical of a 10 inch horn being useful down to 600hz.
But if it does work, that's great. Small and easy to use.
But if it does work, that's great. Small and easy to use.
I thought I was too?
You can't tell from a response measurement, you need to take polars.
Seems to me it collapses around 600 Hz if we follow the yellow line (although the directivity of course widens much earlier):
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I've seen that polar and it looks too good to be true from such a small horn. Definitely makes me curious.
The XR1464C has a 800Hz cut off and is simply too short to load down to 600Hz. You should consider the XT1464 instead.
Like has been discussed in other threads recently, I don't think the idea of loading or cut-off applies to such small horns.
I think they are better characterized as waveguides.
And that their size is about how low pattern control extends, not loading.
Seems the CD being used is what mainly determines how low the CD/horn combo can be used.
fwiw, here's an outdoor on-ax meas of the bms4593 on the xr1464c taken a while back
I think they are better characterized as waveguides.
And that their size is about how low pattern control extends, not loading.
Seems the CD being used is what mainly determines how low the CD/horn combo can be used.
fwiw, here's an outdoor on-ax meas of the bms4593 on the xr1464c taken a while back
Where do you get this confidrnce from? The xt1464 is not a small horn. Search for Dario Cinanni and his method to design horns and then come back again about loading of these items.
Confidence comes from working with the horns on some modular PA builds.
So comes from my measurements ...
here's the bms 4594he on XT1464 in magenta, on top of the the 4593/XR1464C already posted. (4594 and 4593 lower sections measured super close on whatever horn i compared)
If you have a link to something from Dario Cinanni you'd like me read, will be happy to do so. Really like the XT1464!
copying links with this damn phone... ;-)
Please search for
dario cinanni hornella
or
speakerlabs
There is a detailed article how he designed the Ciare pr614. Also a lot of math in it. With his tool several modern italian horns were created. I suspect also the xt1464 and LTH142. The absense of diffraction slots is important. He seems to optimize the volume expansion of these horns.
Please search for
dario cinanni hornella
or
speakerlabs
There is a detailed article how he designed the Ciare pr614. Also a lot of math in it. With his tool several modern italian horns were created. I suspect also the xt1464 and LTH142. The absense of diffraction slots is important. He seems to optimize the volume expansion of these horns.
It may be possible to use diffraction to assist in directivity control while keeping loading, if loading is more important to you than diffraction.
When to use an asymmetric waveguide
Everything is relative. Besides, it's 30cm (with the radius) and narrow in angle.
When to use an asymmetric waveguide