Dear @gladmo : " a consequence of minimized distortion. "
Btw, you can put at minimum the IMD in your system/speakers taking out the frequency bass range below 100hz on your Aerial's because the woofers crossover a little high at 400hz and the IMD down there is higher than ideal. The low bass dvelops high excursion on those woofers that afects at significative level all the frequencies above 100hz and this IMD goes against the mid range and high frequency ranges. You neeed to clean up down there, remember that low bass harmonics affects the overall quality speaker response.
To do that you only need not one but 2 self powered subwoofers with high and low pass crossover filters. Worth to do it with great rewards.
R.