@erik_squires , wow +10, nice article. I hope the other people reading this thread benefit from your wisdom here.
This proves a point I keep repeating: You have no idea what the lower cutoff of a speaker in a room actually is until you measure it. Because most audiophiles don’t do this critical step they usually get misled about what their next steps should be. The average audiophile needs to reset what they think they know about speaker specifications and what it means.