That is correct. In this application the noise is already to quiet. With this tube muffler could it act as a standing wave tube and for some unknown reason I have got the outlets positioned where the nodes would be?
This is my first post and I'll admit I probably don't even know enough to be dangerous. Any how what I have is a a 3' long 6" dia tube that is functioning as a muffler for a boat. It has two 4" dia inlets mounted perpandicular to the length of the tube at 28" on center and two 4" oulets mounted...