You have probably seen those massive "Big John" horn setups dominating audio feeds lately. I loved the concept and the aesthetic, but I wanted to see if I could engineer that same dramatic acoustic presence into a small fully 3D-printable form factor.

After some prototyping and testing, this is the result: **The Tiny John.**

The dual front horns dramatically improve the acoustic performance, sound projection, and clarity. I paired them with the worlds first thermoformed 3D printed passive radiators, bottom-mounted, and the punch this little enclosure packs is honestly incredible.



**A few details on the build:**

**No AMS/MMU Required:** I designed the enclosure to be entirely modular. The horns, main body, grills, and the central bridge (which houses the power switch) all print separately so you can easily customize your colorways.

**Acoustic Bridge:** The center console acts as a rigid bridge to tie the two independent acoustic chambers together, keeping unwanted resonance down.

# 

# The Tiny John Challenge

I'm incredibly proud of how this turned out, but I also know how talented this community is. So, I want to start a bit of an arms race to see who can engineer the absolute best, most acoustically impressive "Tiny John."

**If you want to jump in, here are the rules:**

**Power Limit:** Under 10W total power.

**Weight Class:** Under 2KG total weight.

**The Maker Rule:** The entire enclosure and acoustic structuring must be fully 3D printed (only bare-minimum electronics, drivers, and mounting hardware are allowed).



# File Status:

The base models are going up on Printables today. Just a heads up: the STEP files, a full step-by-step assembly guide, and a deeper printing guide are still in the works and will be released over the next couple of days. I’ll be posting updates on the model page.

Let me know what you think of the design, and let me know if you plan on taking on the challenge! The speaker is linked in the model page. 



[Download here.](https://www.printables.com/model/1626880-tiny-john-open-source-bluetooth-speaker)

I made the "Tiny John": A Fully 3D-Printed Bluetooth Speaker (That actually sounds good)