Shahinian Obelisk vs VandersteenTreo

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....

They are. We are all metric and centigrade, you know...

As for the size: "The two fronts are cones ¼ X 20 threads and a special spike in the rear with spacers for tilt 3/8 X 16 thread."

So, total we are 4 front cones and 2 back spikes, right?