You could apply eq if there's enough overhead but 6 dB boost would require 4x the power and at 16hz what are you really going to have for content....you a large pipe organ fan or something? Room gain may reinforce existing extension but won't actually extend it. Some do choose for finish options.\n\n\nI figured some movies will go down that much or maybe more. Perhaps at this point it’s chasing diminishing returns. When you talk about EQ is that the controls on the sub, Like Q control or gain or something else?\nGood to know that room gain won’t extend extension.