acoustic system resonators


does anyone have any expierence with acoustic resonators?are they worth looking into?
thanks
alpass
Two edge sword. If you don't want to hear a difference, you won't. But I am sure you knew this.
Audiofeil, I get the impression that you never did hear these resonators yourself. It's very easy to convince a listener with an open mind, that these resonators work. If this person is willing to pay the rather steep price, that's another question.
Peterb, did you have to move the Acoustic Resonators around to find the optimal spots? Which ones did you use?
There are guide-rules for placement (eight steps):
1. Position a resonator on the back wall, exactly between the speakers, 30-60cm above the tweeters
2. Position a resonator above the first one (between this and the ceiling)
3. Position a Basic resonator right under the first one, around 15cm above the floor
4. Position two Silver resonators on the side walls, next to the speakers, same height as #2
5. Position two Silver resonators on the side walls, next to the speakers, 15-40cm above the floor
6. Position two resonators on the side walls, same height as #1, next to or slightly in front of the listening position
7. Position a resonator right behind the listener, same height as #6
8. Position a Basic resonator right behind the listener, 15cm above the floor

I'm using:
#1=Platinum
#2=Special Gold
#6=Special Gold
#7=Special Gold

When I remove all cups (and I have showed this to a few audio-friends) the soundstage collapses completely (in width, depth and height).
Peterb, I assume the back wall is behind the speakers. Were I to position these eleven resonators as you suggest some would have to be on windows and cabinets or book shelves. Is that okay? Also those behind me would be behind shelves of records. Okay?

I have tried many room treatments. I have used RPG diffusors, Tube traps, Room Lens, Acoustic Mirrors, Shun Mooks Mpingos, and presently Shatki Halographs, which are the most successful. I have also done digital room corrections which were the worst. I have also used Brilliant Pebbles and Acoustic Revive Quartz Resonators and still have some Harmonix room treatment pucks on the walls. The Acoustic Revives have been very effective on the speaker wall and the windows on it.

I have found great interactions when using several of these devices at the same time. Presently, I can only use one pair of the Halographs, seven of the Shun Mooks, and the few Acoustic Revive Quartz Resonators on the speaker wall. My H-Cat P-12R line stage has a very effective Wave Timing Control that greatly affects the sound stage and realism of the image. I particular the Halographs, Mpingo Disks, and Brilliant Pebbles fight with the H-Cat's WTC. I imagine that the Acoustic Resonators would also.