Placement tips for Synergistic Research HTFs

I have a number of the original resonators from Frank, gold and silver.  
I used to have a very small listening space and the wall was directly behind the listening position.  
It was hard to believe but they really worked, especially behind me to help make the rear wall directly behind me less obtrusive.  
Now that I'm in quite a larger listening space with 15' ceilings and about 28feet of width I have the resonators up but haven't critically placed them or even tried to ascertain their benefits by removing them.  
One did fall the other day and it rang for what seemed like almost 10 seconds, which surprised me a but.  

Todd, jkbtn,
Hang in there guys. Unfortunately, work around the house not to mention work itself, is casing delays in my ability to get out my final report. The scope of this final report is also adding to the delay as I discuss constuction, material sourcing as well as the head-to-head testing results.
the reason I ask you to hang on is, while jkbtn had a good idea as far as construction goes; when his resonators were compared to other self-made types of resonators they finished way at the back end of the pack. They didn’t even make the cut down to the "six finslistist" list of resonators I re-tested this past weekend. So, I can understand jkbtn could become discouraged. But jkbtn’s cones were a huge help, as you will see.
Todd -in my testing, going smaller did not make results better. To my ears the smaller the self-made resonator the more minuscule the effects.  
You can see the six finalists if you look at my System Pictures, here on Audiogon.
So don’t get too down on these, don’t give up, and don’t give/throw away any of your parts. Trust me - I will get this report out.

Toolbox

Hey, no worries and no hurries. Jkbtn, I’m sorry for being condescending. I have no problem with you not hearing a difference and moving on. But attacking products as snake oil that you’ve never tried, or assuming that, because you didn’t hear a difference, they don’t work and the rest of us are fools is a bit condescending to us.

I was sceptical of cables and outlets. When I heard the difference they made, I decided to not attack things that I may find ridiculous any more. I simply decide if I want to try them, then decide if they work for me. If not, I’ll share my experiences. But I certainly won’t go on a mission to save everyone from snake oil.

Toolbox - i just looked at the pics of your resonators. It's funny, I just went to Lowes last night and bought 3/8" OD compression caps and made some resonators with them as bases instead of the 3/8" copper pipe caps. It looks like you are using the same thing! I think I like the sound better with the brass compression caps. Plus, they look better. Ha! The difference in ours is that I crush the brass beads/bowls into the caps using a bench vice, instead of gluing..

Interested to read what you heard!

Todd,
I have stopped pressing my cones into bases and now only use glue.  I would be very interested (if you have a couple of jkbtn's 14mm cones) if you would take some Elmers and build two or four temporary models with the cones sticking out, and test them against your press fit models.  I'd love to find out if what you hear is the same as I heard.
Oh, and yes, I agree.  I'm finding out that big cones are the best and a big bottom can help too.