I have an 11" x 4" port in 4 cu ft for my W15GTi. This tunes it to ~24.5Hz. But, the preferred tuning would be ~20 Hz with a port length of ~18".
The cabinet is not deep enough to accomodate this length and I was wondering if there would be any determent, or special "retuning" required if the port has a 90 degree bend in it. After all, we see many ports that are folded like a set of intestines and these seem to work fine. And when was the last time anyone saw a straight tuba?
Thanks