1.4" or 2" throat large constant directivity horns you can actually buy!

"There are these 2" horns I found on ZXPC's website -"

These are very good value. Overall decently solid and well made.

The throats may need a bit of work if you are a perfectionist.
The throat area may need a brace if you plan to mount a very heavy driver and/or will subject them to rough handling.

...but that's quite OK, considering the price. They are also pretty easy to drill / grind, so are a good test rig (e.g. to try a DIY Synergy, without too much work / without buying a lot of tools).

I extended my ZXPC horns & built them into a fairly solid enclosure (see post 20).

https://www.diyaudio.com/community/threads/paper-cone-open-frame-driver-for-front-horn.275899/

One day soon, I hope to get these horns (or something similar), soffit mounted in a dedicated room.
 
Have anyone tried Joseph Crowe horn design? how is it compare to other popular one?
I have got ES-600 and I can compare it HF950. The ES-600 has much narrower beam, but they seem to produce more stable imaging when being placed close to the front wall. ES-600 are 2x more expensive if being printed, or 10x more expensive if being made from wood.
 

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Hello there!
May be my contribution to this thread is obsolete, i have a stereo setup with quite large horns in my home office, here the thread link:
https://www.diyaudio.com/community/threads/ultimate-open-baffle-gallery.123512/post-7393996
The waveguide for the 8 inch driver is too small for the kick bass extension of the midrange wood horn, i know that, it is intended for another project and only for testing in this construction. The wood horns comes from here: https://www.lautsprechermanufaktur-heyder.de/en-us/lmh-horns/strak-horns - they aren't really cheap but if you look at the cost of the wood itself it is OK for me. I have purchased a pair of of these drivers here: https://www.bcspeakers.com/en/products/hf-driver/1-4/16/dcm414-16 and in combination with the 16 inch wood horn with tractrix shape and a small amount of PEQ in Hypex fusion plate amps they sound really good for me. I have a CLIO pocket measurement system, i need some help for carrying out the big construction and make some decent measurement outside in the garden
 
Put the speakers up on a stand and measure the polar response, i.e. the frequency response at multiple angles using gating as necessary. This is the first and most important measurement to make. Clio, HolmImpulse, whatever, they all make the same measurements. It's not hard, just tedious.
 
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