Diy Rey Audio Kinoshita

[oltos]

A larger version of the TH-4001 pretty much, sorry don't have polars. Made to fit the TD-4001 compression driver obviously, as it was Shozo Kinoshita and B.Locanthi who designed it. Meaning it also does well with JBL 2450's, TD-4002, DAS ND10 etc.

So, then not likely a good match for this 3" driver?
https://www.usspeaker.com/radian 760neoBepb-1.htm

Tsingtao_1903, who cloned, or otherwise made his own version of the RH3, said that it's an exponential, not a CD horn. https://hifihaven.org/index.php?threads/a-new-but-old-wooden-horn-for-the-2-axi2050.8115/

Any opinions on how the stock RH3 might differ from this horn?
https://josephcrowe.com/products/3d-cad-plans-for-es-290-biradial-horn-horn-no-1670

 

[Arez]

So, then not likely a good match for this 3" driver?

No.
The throat angle on the Radians are wrong.
The aforementioned drivers have "identical throat parameters".

It was developed wo use with the TD-4001. What they were delivered with. and kind of natural since he worked on the design along with Locanthi.

Tsingtao_1903, who cloned, or otherwise made his own version of the RH3, said that it's an exponential, not a CD horn.

Neither is the TH-4001 really.

They are both 2" throat, biradials with fins.
One is larger in physical size.
The horn curvature and exact dimensions i dont have.