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Old 20th June 2020
  #3
Lives for gear
 
Kyle P. Gushue's Avatar
The issue with STC is it doesnt go below 125hz. Music does, so just like you can hear the bass of the neighbor voice, they will hear the bass of the music which dips lower than voices. The ir irc-761 shows test data of walls below 125hz. This can help you get a better idea of what to expect.