Fine Tuning Vandersteen 5s An offer gone missing

Ditto what machine said. Vandersteen would tell you that after all the adjustments are done, a careful listen to something like Ray Brown's Solar Wind is in order.
FWIW, I had a dealer set mine up initially and he really screwed it up.

mre2007 - Rives will work, a cd from Vandersteen with 11 frequencies matched to the 11 potentiometers makes the job easier. Also, time alignment goes out the window for the bottom firing bass (low frequency = long wavelength = even if the bass was time aligned you couldn't tell it).

4yanx - "the obvious question (for which I probably know the answer) is, can a guy lay his paws on one of the Vandersteen-produced CD's?". I'll bet you know the answer too, Vandersteen might sell you one and a manual if you don't have it, else somebody with 5's might clue you in to what frequencies to burn from a rives cd (I've got 5a's and do not know if the sub amps are identical to the 5's). If your room/speaker position is abnormally bass friendly you might end up starting the tuning process a second time with the pot's at less than their 12 o'clock starting position, fwiw.
No shot at Zargon, but I'd really reccomend buying the Ratshack spl meter, seems like they were about $60.00 US +-and I thought it was money well spent. Besides set up for the sweet spot it is interesting to see what is happening with SPL at different points in your room (at least if you are a bit nurdy like yours truly).