- Oct 18, 2017
I think maybe you just haven't heard the best modern CD designs. Old CD horns used diffraction slots and this caused harshness and a bit of distortion in the highs. Modern CD's have either smoothed the diffraction slot (JBL knuckles) or removed it entirely (Gedees and Seos).A wide sweet spot is not something I've experienced with any CD. I am always able to locate the speaker immediately - even on said JBL's that I absolutely loved.
I have no problem with waveguides. I like them paired with traditional drivers like Amphion and JWM Acoustics use. These are modest waveguides that don't have the issues with the sweet spot I usually experience.
If you look at the article I linked you can see that it's just a matter of physics. The constant directivity behavior allows a far wider and more even sweet spot than could be possible otherwise.
Having said that, it seems like most people set up their CD speakers incorrectly. To create this effect I'm mentioning your listening axis has to be about 22 degrees to the outside of the center axis. If you don't do that then by the laws of physics you will actually make the sweet spot much worse.