Placement tips for Synergistic Research HTFs


I just bought 15 HTFs and will also be making about a dozen of Ozzie's homemade models.  While I will re-fresh myself with SR's placement tips, and I get that I will have to do some experimenting to tailor the HFT effect to MY listening room; are there any "Advanced HFT Placement Tips" some of you would like to share with us?  Something that might be overlooked by many of us?  Or maybe, just a good rule-of-thumb tip for someone just starting to use these?
The tips could be tips for bring out more highs, solidifying the bass response, placement hi vs low, in front of vs behind speakers, on side walls, at reflection points, behind the listener, on the ceiling above the equipment or above the listener, on the equipment.
Any ah-ha that you would like to share?  I would also be very interested in hearing from people using Magnapans.

toolbox149
toddverrone,

With geoffkait I am having some fun -- a bit of comic relief -- as well as helping him out by attracting prospective customers. I firmly believe in social service. Lol.

You ask about working on different sizes of HFTs. I am working on this now. I have supplies on order.

Regarding the OP, I have been using 2 sizes of copper cones with one size of copper caps. I have other sizes on order and hope to get equally good results. Frankly, I have been really surprised at how well things have gone so far. The break-through was using Franck Tchang's diagrams. This led me to develop a whole new kind of resonator (2 different sizes). I encourage everyone to let their imaginations run wild regarding how to make resonators and where to place them. Of course, if measuring devices help the process, then by all means use them too.
I'm interested to hear how your experiments turn out. As soon as a saw what these things are, my first thought was that there should be different sizes for different frequencies and their harmonics.

toddverrone
I’m interested to hear how your experiments turn out. As soon as a saw what these things are, my first thought was that there should be different sizes for different frequencies and their harmonics.

A very perceptive question, why shouldn’t there be different sizes? Why are all of the original Tchang tiny bowls all the same diameter? Why wouldn’t he have a whole range of sizes? And why are all tiny bowls from other manufacturers all approximately the same diameter as Tchang’s? Did they all just blindly copy his? And why is bass performance affected so much by the tiny little bowls? Answers at 11
I'm surprised to know that there are people out there actually buying this stuff.
Oh I'm curious about this big parabolic resonator ($2500).
I am trying to build my own using guitar cone resonators ($10/pc).
I know it would probably be just another perceived placebo effect though.
https://www.audiogon.com/listings/tweaks-highend-novum-pmr-premium-mkii-room-acoustic-resonator-extr...
Thanks for posting the link to the large resonator. Of course it should be mentioned that’s pretty close to the size of a relatively large medium Tibetan Temple bowl. Oooooo!