Back Horn Speaker V3.0 Nautilus - Bluetooth, Active, Passive

<img src="http://www.alpinehiking.eu/imgs/Speaker_Banner_640.jpg" alt="">
Check out the full set of stereo components (and plenty of other stuff): https://www.thingiverse.com/guppyk2/collections/my-stuff

Here it is. <b>Kissing the frog V3.0.</b>

This is mainly a design (aesthetic) upgrade and includes many suggestions for improvements that came from the community in the last weeks - thanks all! I have always wanted to try squeezing that back horn into something that looks like a nautilus (or somewhat more prosaic, snail) shell.
Once again a complete redesign, even more stylish, super cheap, no soldering, and fully printable (and the main body is still a single print).

Here the <b>differences</b> (as compared to V2.0):
- The new shell design. This time the horn is a spiral and opens up to the side (which should be fine with lower frequencies)
- The enclosure is now designed for a 4" driver (UPDATE06Jan21: I have included an adapter for 3.3" drivers like FRS8M)
- Upon request I have added a wall mount to the back. Mount like your favorite painting. Any screw, hook, or nail will do - just remove that old Picasso of yours and mount that shiny new speaker...)
- Also upon request (but also because space was really limited), Bluetooth and amplifier are once again optional, this time on a single board (no soldering required!), and mounted in a small box to the back of the enclosure.

Once again the concept remains the same. It is like kissing the frog. You kiss that 4"…