acoustic system resonators

Tbg,
The back wall is behind the speakers indeed.
The cups should be resonating freely, standing on their wooden bases, and the surface they are attached to doesn't matter. The position of the resonator in the room (in relation to speakers and listener) has far more influence.

Peterb, did you see the follow-up review on 6moons? I went to the international distributor's webpage also.

My guess is that they would interact with my Halographs and Acoustic Revive Quartz Resonators. Of course there is no way of knowing beforehand. Were I able to try them in my room, that would be great. But alas that is very unlikely.

Audiooracle
Here is the test data that you request:

https://www.virtualdynamics.ca/uploads/files/Resonator_Pro_Link_Test_Report.pdf

Link does not work for a long time. Do you have this document ?

Maximus_lt, Virtual Dynamics is now High Fidelity Cables http://www.highfidelitycables.com/reviews.html

I have no idea whether they continue to have the test data you seek.

I found a new link if you are interested: http://www.avataracoustics.com/acousticsystem/pro_link_test_report.pdf