My personal listening tastes like the "tweeter" about 38/39" high. I find in my room it gives better imaging, soundstage, & overall coherence. Adding the DIY outriggers got me to exactly 39" & it sounds just perfect. Also the outriggers have definetely anchored the bass without a doubt.
I used 1/4x1 steel bar (4/12") & 8oz (3") plum bobs from Home Depot. I used the existing 1/4x20 threaded spike insert already in the base. Didn't take long to do the drilling, grinding, painting & the effort was well worth it. Just out of curiousity how high do you guys like you tweeters?