ok maybe , but the output level you measure with your mic is substantially different what kind of horn is attached, especially at LF.
Have you considered Joseph Crowe’s ES 290 horns? They are an evolution of the Yuichi A-290 and may well be better performing.
I did look at the J Crowe offerings but concluded they were quite a bit more expensive than some of the other options I looked at, and the budget isn't infinite.
Not one of the builders I contacted ever responded to my questions so it is unlikely I would consider them in the future.
In the meantime I have achieved pretty satisfactory performance with the 2380A's I already have and will reconsider sometime next year whether this is a smart expenditure of limited funds. My feeling now is that it probably isn't.
I replaced the JBL 2440 drivers with Radian NE950PB-16 which have turned out to be most if not all of the fix needed, excellent performers.
Not one of the builders I contacted ever responded to my questions so it is unlikely I would consider them in the future.
In the meantime I have achieved pretty satisfactory performance with the 2380A's I already have and will reconsider sometime next year whether this is a smart expenditure of limited funds. My feeling now is that it probably isn't.
I replaced the JBL 2440 drivers with Radian NE950PB-16 which have turned out to be most if not all of the fix needed, excellent performers.
You can buy the CAD files for the ES290. Then you just need to find a CNC shop to machine them from plywood.
The 2380s are not as good as the A290s by a long shot. The pair I built in '03 or so cost me a sheet of mdf and sweat equity. They weren't hard, just took time.
Thank you Brett, this is the sort of information I need to know in order to make the eventual decision. I know it was a long time ago, but do you remember any specific impressions of the differences you heard?
I'm not in a position to build myself, I will have to purchase a built pair. I think the CNC idea has merit, but around here it is probably cheaper to import an already built pair due to cost of materials, their labor and the value of my own time. (I don't enjoy working with wood.)
I'm surprised that after 3 months this thread suddenly resurfaced.. lol
I'm not in a position to build myself, I will have to purchase a built pair. I think the CNC idea has merit, but around here it is probably cheaper to import an already built pair due to cost of materials, their labor and the value of my own time. (I don't enjoy working with wood.)
I'm surprised that after 3 months this thread suddenly resurfaced.. lol
ES290 - Larger and less expensive
It’ll be next year before I finally decide. But at this stage my front runner is buying Joseph’s ES290 CAD files. Especially as they are available in different scale sizes, larger to go lower. (Or higher cut-off but smaller)
“Optimized throat adapter for standard 50 x 50 throat with 2" driver” …
would need to check just how well the adapter is “optimzed””- somehow
Custom Yuichi A-290 Biradial 3D CAD Model --- Make Any Size!! – Joseph Crowe
but rather than CNC’ed wood, was thinking of saving money by getting them 3d printed. Which is all totally new to me …
Glad that planet10 pointed out
“CAD plans are fairly easy. Getting them converted into the STL files needed to 3D print them”. (Maybe Joseph Crowe could suggest someone?)
Can anyone recommend or suggest a good/ better filament. Maybe, as long as I damp it well, it would be ok. But it would be preferable to use a filament with the right “properties” – whatever they are? – so I don’t need to add an external damping
It’ll be next year before I finally decide. But at this stage my front runner is buying Joseph’s ES290 CAD files. Especially as they are available in different scale sizes, larger to go lower. (Or higher cut-off but smaller)
“Optimized throat adapter for standard 50 x 50 throat with 2" driver” …
would need to check just how well the adapter is “optimzed””- somehow
Custom Yuichi A-290 Biradial 3D CAD Model --- Make Any Size!! – Joseph Crowe
but rather than CNC’ed wood, was thinking of saving money by getting them 3d printed. Which is all totally new to me …
Glad that planet10 pointed out
“CAD plans are fairly easy. Getting them converted into the STL files needed to 3D print them”. (Maybe Joseph Crowe could suggest someone?)
Can anyone recommend or suggest a good/ better filament. Maybe, as long as I damp it well, it would be ok. But it would be preferable to use a filament with the right “properties” – whatever they are? – so I don’t need to add an external damping
I printed the ES800 horns in PLA in two halves (from the model bought from Joseph Crowe). Actually, for a relatively small fee, you can have a horn customized to your needs. Printing a 290 size horn would be quite a project and would need to be printed in more parts. Which is definitely doable. This is how they look like without trying to make them look nice. 3D printed biradial ES-800 horn by Joseph Crowe
I had a custom model of a larger horn made by Troy - it is designed to print in 4 pieces, but I am still tuning my large printer to print large stuff faster and in PETG.
I had a custom model of a larger horn made by Troy - it is designed to print in 4 pieces, but I am still tuning my large printer to print large stuff faster and in PETG.
Are the full plans in post 76 (https://www.diyaudio.com/forums/mul...-tad-th-4001-clones-makers-8.html#post6748889) ? My CAD only opens the fin.
Thank you for sharing the link to your project.
I definitely want to get into 3D printing - for a number of types of other non audio projects . But for the time being, especially for a bigger horn, I would probably go to a commercial printer. Although I have no idea what at this stage what they would charge
Is anyone aware if PLA or PETG horns do/ might resonate?
I recently finished a commission to make a pair of the ES290 for somebody, on my CNC router. Before I disassemble the fixturing is there anyone in the UK who is after a pair? PM message me if you are, you would need to pay Troy’s fees for his design as well as.
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Those are very pretty. You might want to sve the jogs, i bet you could move a few sets of those and make some very happy people.
dave
dave
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Is there anything that a CNC newcomer like myself needs to know in building these ES290's?
My partner has his 'apparently' on the way, but shipping has been delayed or we'd likely have a pair made already. I have plenty of native hardwoods on hand to make them out of. These will be a test project as Chris wants some, but they're not the reason why it was purchased.
I’m the new owner of these horns and I can tell you they look great in the flesh. Very heavy and non-resonant. My horn guru is a great admirer of Joseph Crowe’s horns and I’m sure they are going to sound bewitching driven by my wonderful Colin Wonfor amps.
Hi Dave,
I already made the Yuchi 290 on my CNC.
I'm very interested in the drawing of the TH-4001 to.
Because I also have the TAD-4001 driver and want to compare the 2.
Rob
At the beginning of the pandemic I drew the Yuichi in Fusion 360 in order to create plans for making these by hand with acceptable tolerances. The idea is to use either the 30mm or 15mm baltic birch to create both halves out of layers. The Corel Draw (Inkscape can be used to open) document attached will allow creating the templates for a hand-router for the layers and aligning them correctly, I used a laser cutter to cut these on 3mm plywood, there is also a drawing for the horn adapter on the second page. The side jig will be used to create the profile, the attached PDF is designed for printing on A3 paper 1:1. . I also created a jig for handrouting the fins.