Bookshelf bass reflex speaker

This is my 2nd take on the bookshelf speaker design.

Again, it uses the Visaton FRS 8 M speaker and a bass reflex cabinet. This one prints very easily with support only for the speaker and cinch-connector openings.

Speaker: https://www.visaton.de/en/products/fullrange-systems/frs-8-m-8-ohm
Cinch-connector: https://www.neutrik.com/en/product/nf2d-b-6

Since plastic reflects sound a lot I used the wave-surface again. It works really well and I assembled the speaker without any damping material (e.g. polyester wool) inside.

This one is supposed to be a passive bookshelf speaker, so there is no space for an amp or bluetooth module. I would suggest using an amp that can boost the bass by 4-6dB. These little speakers sound quite amazing :)

As an alternative I added a design for a passive circuit to get a more linear frequency response and attenuate the higher frequencies. Please take a look at the pictures. The frequency graph shows the response without the passive correction.

Here is my 6 liter subwoofer for an awesome 2.1 system: https://www.thingiverse.com/thing:4838080