The actual sound produced at each frequency from a cone or a dome is the same. The reason for trying to get the tweeter crossover frequency down low is because smaller diaphragms tend to have better off axis performance. This only holds true to a point mind you where the wavelengths of the frequencies start to get long enough that the larger diaphragms will also give you perfect off axis dispersion. The above being said, it would seem on the surface that lower tweeter crossover points are desirable but there are actually some serious drawbacks to doing this. The smaller cone will start to have a very difficult time reproducing the lower frequencies you are asking of it without distortion as you increase the output. This will make the speaker very irritating at higher volume. We always try to get the best possible off axis response from the mid bass drivers as opposed to lowering the crossover frequency to the tweeter to achieve the desired off axis performance.


Ian Colquhoun
President & Chief Engineer