As seen on YouTube:
Designed for use with a pair of the Dayton Audio TCP115-8 4" midbass drivers, and a Dayton Audio DS175-PR 6.5" passive radiator. The two drivers should be wired in parallel, with the forward driver wired out of phase. Use M4 threaded inserts 6mm deep / 6mm outer diameter, and reusable adhesive to seal around everything. Set the high pass no lower than 45Hz, low pass around 80Hz. ~10W should be enough for it to play at volume. The companion pods should only need a ~100Hz high pass filter.
Midbass Drivers:
https://www.parts-express.com/--295-416
Extended Range Drivers:
https://www.parts-express.com/--295-349
Passive Radiator:
https://www.parts-express.com/--295-498
Threaded Inserts:
https://www.amazon.com/gp/product/B0CS6XGMFD
Screws:
https://www.amazon.com/gp/product/B0BMQ4WV1V
Binding Posts:
https://www.amazon.com/dp/B07PFMD1N2
Recommended printing settings:
PLA is okay; PETG is better.
At least 4 walls (perimeters) all the way around.
At least 20% gyroid infill. (Higher is better; this thing WILL vibrate.)
Print the handles 100% solid.
The author marked this model as their own original creation.