Wayne Parham Messages: 18783 Registered: January 2001
Illuminati (33rd Degree)
It will be good to get Martin's take on your project. My thoughts are that you'll have three primary pipe resonances. The first being set by the entire pipe length, the second by the longer section between the speaker and the floor bend and the third set by the length of the shorter section between the floor bend and the opening termination. Then there will be harmonics for each of those.