I promise not to go on too long and risk thread hijack, but, I am struggling a bit to understand the difference between Sound Isolation (which I think of as keeping sound in) and Sound Management (which I think of as taming undesireable acoustic conditions within the room). Sound Isolation is not an issue for me. I am more concerned with taming undesireable issues (ringing, vocal clarity, etc.) I would assume this is the goal of many other folks here who are essentially building custom HT/Game rooms so it was just striking to see so many HT with little or no acoustic paneling. Bass trapping I agree is harder to see (or easier to hide, usually stuffed into a corner or soffit) but Mid and High range acoustical management is (normally?) much more apparent.
BTW: Reviewing the various panel makers/installers offers little information as well, either specifically or anecdotally (e.g., pictures of installs) as most of the time the panels are on the wall in a standard grid or in a way that seems to offer little more than making acoustical treaments look more like wall art. So, I am left with plowing through the 180+ pages of the Acoustical Treatments thread or using the simple basics of Mirror on wall +1-2' L/R/U/D and a few other panels smattered in other possible positions (e.g., behind LRC as well as seating postion to address echo/rining). Of course I could just spend 2x the money and hire someone who will spend 2x more than I would have... the question is: is 4x the money going to get me that much more than what I would have spent using my much less scientific methods...? I fear I am becoming another case study for the "what I should have done" thread.
@CJO - BTW your build thread is very good at trying to pull info together for other folks to use as some sort of a reference. Thank you for taking the time to maintain/compile the summary in your OP vs. forcing the reader to scan dozens and sometimes hundreds of pages.