Overheard a conversation the other day about someone who had gone to great lengths to determine the acoustic properties and problem areas in his room for his audio. He said he made some bass traps (and midrange I think) to avoid reflections cancelling our and/or amplifying certain frequencies... Claimed it worked wonders and he can now hear the entire frequecy range much better than before...

Sounds quite amazing. Does anyone know anything about this and whether this really is such a big winner. How easy is this to do?

Many thanks in advance for any advise, Floor