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Old 24th October 2019
  #3
Lives for gear
 

Quote:
Originally Posted by TomTurner View Post
Hi All!

Is a 75mm deep absorber more or less effective than a 50mm with a 25mm air gap?
The will both cover down to the same frequency, but the 75mm one will be a bit more effective, and will have smoother absorption (slightly flatter). And as Jason said, 75mm isn't very much... 200mm or more is good.

- Stuart -