I gave that one a try too.Just for the record, 2" throat, ⌀400 x 250 mm:

View attachment 1048279

H, V (0 - 90/5)

View attachment 1048280 View attachment 1048281 View attachment 1048282

Code:`R-OSSE = { R = 200 r0 = 25 a0 = 0 a = 33 k = 3 + 5*sin(p)^2 r = 0.35 b = 0.12 m = 0.83 q = 4.4 }`

Code:

```
R-OSSE = {
R = 204.4463 ; [mm]
r0 = 25 ; [mm]
a0 = 0 ; [deg]
a = 33.3064 ; [deg]
k = 2.5606 + 3.2955*sin(1*p)^5.0417; []
r = 0.28838 ; []
b = 0.11572 ; []
m = 0.86488 ; []
q = 5.8055 ; []
}
```

Note: the dynamic range of the normalized polars is 30dB vs 45dB

Again, trying to find solutions in the vicinity (size and coverage) of the starting point.

I am curious, what the expected advantages of the asymmetrical profile?

-C-C for X0ver in not one of them (still circular mouth)

-Smoothness does not seem to be as good both from simulation POW and from the direct comparison showed by @Dkalsi

-On-axis smoothness by breaking the symmetry? But smoothness ON can be made rather aceptable through optimization.

-Different H and V coverage angles but at the expense of the “constant” characteristic