In-Ceiling Speaker Enclosure for Recessed Lighting Fixture

thingiverse

I designed these enclosures to take advantage of the [Tectonic Elements TEBM65C20F-8 3-1/2" BMR drivers](https://www.parts-express.com/tectonic-elements-tebm65c20f-8-3-1-2-bmr-full-range-speaker-8-ohm--297-2156) mounted in the 6" recessed lighting housings throughout my apartment. With a compact amplifier and a Chromecast Audio (for each speaker), I have a non-destructive method for implementing whole-house audio. Other speaker designs can be found at https://www.thingiverse.com/thing:2608897. The brackets on the side are used to adjust the final depth of the speaker in the ceiling using M3 hardware. They sit on the integral brackets present in my fixtures, although I'm not sure how standard that design is. You will need to remove the shroud and socket-mount bar, etc. I went through several cover plate designs before settling on the one provided - it is meant to simply friction fit around the speaker body. The enclosure volume is limited by the space available in the light housing, which must also accommodate an E26 to Type A outlet adapter, a small DC power supply, the amplifier, and the Chromecast Audio. This is why the wider base on the enclosure; it acts to hold these components above the speaker once in place. It's not ideal and can be a bit of a pain to install, but works well for me given the constraints. An integrated DC power supply/E26 base would make things much cleaner and easier, but I have yet to find or create one. Main body and cover print without supports, but the small height-adjustment piece will need them.