My funny story of the week is that my son had a couple of speakers I built (not Pi's) facing at 90 degrees to each other and had surround sound on his amp. I told him to switch it to stereo. He hit a button but the middle speaker was still where the sound was at. I told him to change it to stereo. His response was "I did". I had him stand where I was standing. It sounded like the middle speaker was making the sound to him as well.We ended up having a discussion about "sweet spots". He proceeded to rearrange his room and the speakers aren't facing at 90 degrees any more.
I've been looking at comments on High Efficiency forum about where audio is at. There is an education process required before the younger gang knows what to look for. It sounds like your family has been getting it as well Wayne.
BTW Nice new look to the site.
Grant.