Albert - I never thought such a simple question would lead to an unnecessarily harsh response. I hope I am just misreading it. Of the hundreds of posts I have read (out of the probable thousands for sure), much has been written, but little that actually provides a clear explanation regarding my question above. Everybody seems to assume these things; I am simply trying to find out why. Perhaps, instead, you could help by directing me to a post that addresses this if there is one, because I cannot find it.
More specifically to your reply, what if isolated outlets are used in a steel box? Then the grounds wouldnt be shared
right? As far as the countless threads, doing searches on preferential grounds, isolated grounds, and dedicated grounds all yield no matches. Yes there are many threads on dedicated lines (like this one), but they dont address my questions, which is why I thought it was appropriate here. The magnetic part of the question is also still obscure to me. There are no complicated parts inside the outlet box and no music signal, so how does a magnetic field there affect the sound, and is there actually a magnetic field in the box? I am sorry, I just cannot seem to find the answers/explanations to my questions and I HAVE spent much time reading other totally redundant posts/threads.
Marc - your room is very similar in dimensions to my daughters bedroom (13x12x8). Her room, even with a bed, desk with books, bookcase with books, lots of stuffed animals and so forth has horrible ringing and echo. Overall it is very loud, noticeably so. Meanwhile, the other bedrooms in the house, with different dimensions (smaller and larger) and even less absorptive and diffusive objects in them sound much better and quieter. The effect really is dramatic. I see you have acoustic treatments planned already, but if you have not already done so, perhaps finding a qualified acoustic consultant will speed your time to full enjoyment. It is amazing what an experienced acoustic guy can accomplish with little investment.
