I once had Janszen 130s (and 65s, too) and I agree with Kehut's assessment of them. What I did was to construct a vertical ladder-frame and stack the elements. This widely opened the radiation pattern and vasatly improved the soundstage. However, it was at the expense of the low end requiring me to add a cone midrange to the system, going from 2way to 3way. Lovely sound, though.
Kal
Kal