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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's avatar
toddverrone
840 posts
 
You guys just made me actually chuckle. Thanks.

I finally got the brass bowls in the mail. I put them in some 3/8" copper plumbing caps.. tight fit, had to use a bench vice to push the bowl into the cap.

Gotta say, I was very sceptical about these HFTs, DIY or not, but they do seem to have an effect. I have lots of experimenting​ to do.

Geoffkait, you did refer to a wavelength range a bunch of posts back. I'm not about to wade through all of the bickering you and Sabai do to find it, but I believe you said 1/8" - 3"
geoffkait's avatar
geoffkait
23,365 posts
 
Todd, hi, it’s kind of a long story and I hesitate to answer your direct question regarding wavelengths for that reason. I’m afraid you’ll have to sift through the thread to find what it is I said. I prefer not to *compress* all my words, which I chose carefully, into a simple sentence or two. I don’t mean to be Mr. Mysterioso but would it help if I said every dimension is a wavelength of something? And all wavelengths have corresponding frequencies, too. If it helps you any, disregard Sabai’s posts since they are almost all some sort of personal attack.

toddverrone's avatar
toddverrone
840 posts
 
I can't tell if I understand what the dickens you're talking about. I feel like I do, but then you make comments that make me question if I do. So then I think you may be assuming things about my knowledge.

I understand waves. I understand they can travel through different forms of matter and energy. I understand that certain wavelengths and their multiples are affected by the dimensions of structures. So, what am I missing? Or am I just not putting the pieces together correctly?
jkbtn
71 posts
 
I also got the best effect by putting my resonators on the front of my speakers. That's about it... (being truthful to myself).
geoffkait's avatar
geoffkait
23,365 posts
 
Todd, this one’s for you. Hope this helps clear things up.

First, everything you never wanted to know about resonators:

https://en.m.wikipedia.org/wiki/Resonator

Next, you can now calculate your own acoustic wavelengths using this handy calculator:

http://www.mcsquared.com/wavelength.htm

You will need a different calculator to determine electromagnetic wave lengths, obviously.

Voila!

http://www.sengpielaudio.com/calculator-radiofrequency.htm


Cheers,

Geoff Kait
Machina Dynamica
Advanced Audio Concepts

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