Just curious to see what your guys experience is with enthusiasts or even professionals who operate on outdated or plainly incorrect audio information or just parrot what others have claimed and pass it off as fact. I’ve got one AV installer\/calibrator near me in my small New England area and years ago before I started reading Sound Reproduction, AH articles and YT videos and other credible sources of information I really only knew the basics of how to setup my humble 5.2 system which consisted of a pair of ML Motion 10’s for mains with a Motion 8 for CC, Motion 4’s for surrounds and two Def Tech Supercube II’s ran off a Denon x2300. Not a phenomenal setup but I paid $500 for all of it. Anyway, the installer\/calibrator guy told me I shouldn’t need more than one sub and to aggressively absorb my room with bass traps and wall panels especially at the 1st reflection point. Mind you this was all over the phone without him even seeing my specific L shaped room. Luckily before I wasted a ton of money I borrowed a ton of Auralax acoustical treatments from a close friend who had a home studio and it didn’t sound good. It didn’t sound horrible but it clearly wasn’t better. With one sub my 3 row seating area had one seat that had decent low end response with the other two having what I can assume was an 8-12dB null. Anyway years later I’ve got 4 subs ran through a MiniDSP 2x4HD, a much better AVR, exponentially better speakers and more importantly a fundamental understanding of the significance of multisub and proper sub integration. I’m not saying I’m a genius with this stuff but it’s purely through AH and you guys that I’ve went from zero to hero (at least in the eyes of my friends now getting into home theater who often are in awe of REW with a UMIK-2 and actually being able to see FR changes after placement changes).