Hinged port piece for easy tuning change.

[Knocker]

Self-explanatory. I couldn't decide what tuning I want especially since I was thinking about making my box bigger by removing the wooden blocks I had put in there to lower the enclosure volume. So if I do take those blocks out but want to keep the same tuning I will just bend the port back on those hinges and raise the tuning. Haven't tried it yet but it seemed like a neat idea at the time.