I consider my OBs a "subjectivist" speaker and I kind of wanted to build one that is more into the "objectivist" camp for a while now. There are actually three designs based on this concept. Omni bass transitioning to cardioid midrange/treble. This is the first one I built and might be the best sounding. If it didn't sound great I wouldn't bother spending hundreds of hours tweaking it to perfection Here's what they look like: First the current frequency response in-room: The peak at 8kHz is the only annoyance and it's not as bad as it looks IMO. That's not to say it isn't there. As you will soon see, these are brually honest and revealing speakers and the peak is the price we have to pay with the driver selection. The more interesting bit: Directivity (this is from the second crossover revision, however I normalized it so it should still look the same) Again, not perfect. Some narrowing at 1kHz and widening around two or three resonances at 2.5kHz and 8kHz. However listening to how it sounds outdoors it has come a long way. It doesn't sound weird at 90 degrees off axis anymore, which is entirely due to acoustic mods I have applied. This is mostly based on things I learned when modding headphones. There are ways to get a smoother directivity plot, but I'm fairly certain it would hurt openness and would require a different (worse IMO) crossover. And finally, this wouldn't be an objectivist speaker designed by me without a good step response: I will likely get proper measurements of the current config outdoors as soon as the storm and rain has calmed down.