Synergistic ECTs

Much like the HFT's, perhaps the ECT's are negating resonances at specific frequencies. The cancelation may result in a blacker background. It almost seems more rational at an electronic level than the range of frequencies seen by an HFT across your room boundaries. This is why I may be blabbering nonsense because in that theory, wouldn't an HFT need to be substantially larger or is it intended just for the highest of frequencies that influence ambiance?

I really have no idea how or why they work, other than what SR says. What I do know is that they most definitely do work in my system. As a consumer/hobbyist what else do I really need to know? If I was a competitor trying to make a similar product, I'd be much more interested in explanation.

Just got in another set of ECTs, and they have taken my system to yet another level. They may not have a lot of buzz or current reviews, but they certainly work as advertised in my system, and are a great value for the money. 

BugRed,

The x4 is the final unit after the wizard. Ask Bill if he has a used or demo unit.