3" Angular Speaker (larger enclosure)

Remix of the Angular Speaker Box (https://www.thingiverse.com/thing:2103156) by Chris Loidolt. This is what I changed:

- Added a cutout to the HiVi B3N speakers would fit. https://www.parts-express.com/hivi-b3n-3-aluminum-driver-round-frame--297-428
- Made the bottom piece 50mm taller to increase internal volume by 0.4L for a total of 1.1L. I thought increasing it a little bit was important since the manufacture recommends 2L sealed and the original design was only 0.7L minus the speaker volume.

I will add some polyfill to hopefully further improve the lows.