Shahinian Obelisk vs VandersteenTreo

@ja_zz 
Why don't you just buy a Radio Shack SPL Meter off Ebay and be done with it? If you were closer, you could borrow mine. (Or, you could fly me to Russia. I need a vacation...).
Using the cheapo Radio Shack meter is easier and if you run into problems, we can help you. (Well, probably Johnny).
B

audio tools runs on my ipad...
what is unknown is the mapping of the microphone to the RS analog meter, IF I were home I could do this....

i would say use what you have as long as you can generate test tones on the Vandersteen EQ centers

remember we are NOT trying to equalize perfectly flat anyway just knock down the bigger nodes and fix cancellation a bit

Bob,
I looked those SPL meters up, and  I can get a cheapo version here.

Tom,
Point taken, thanks.

I looked those SPL meters up, and  I can get a cheapo version here.

Great, now we're getting somewhere. You can even substitute some bolts for the cones, until they arrive. Just get the proper thread( I think it is 3/8-16).  Put the bolt head downward and add a lock nut. The spikes are about an inch to 1.25 inches tall (at least on my Treo's), so you would probably want a 1.75 inch bolt(depending on how level your floors are). Follow the manual's set up directions for angling and you're good to go. Then on to equalizing them.
B

5a cones are 1/4 x 20 i believe.....probably rare as hens teeth in Russia....