I am still playing with my design, but I only have problems with one recording - Burmester's recording of Chinese drums. The Lowther is moving more than several millimeters and may be bottoming out. I tried a higher crossover which effectively eliminated the overextersion of the Lowther driver even with the Chinese drums recording and in my case the sound was not as good. But in my case I know the reason why. My woofers are mounted in W-style open baffle boxes which tend to have resonances above 100 hz. Thus, the resonances from these woofers are what are causing the problem. I am confident that when I mount these drivers in a different box, that my system would sound fine with the Lowthers crossover over at a higher point.What (sub)woofers are you using and in what enclosure are they mounted?
Retsel