3D Printed Isobaric Loaded Subwoofer. Loudspeaker / Speaker

This subwoofer features a large triangular port, a hallmark of most of my designs. Its generous volume and dual drivers, which operate mechanically in parallel, allow it to achieve a low-end extension down to 45Hz and even lower, perfect for a compact 2.1 system!

Drivers:

You should use Dayton's TCP115-8 drivers and connect them in parallel to achieve a 4-ohm impedance. In the picture, I used the AL115 drivers, but for better performance, I recommend using the TCP115 drivers! 

Wiring:

You wire the two drivers in parallel, meaning you connect plus to plus and minus to minus. The front driver has an opening where you can pass the cables through to make the parallel connection. Then, connect a cable to the rear driver and guide it through the hole in the back of the enclosure. Seal all wire holes, for example with hot glue, to ensure they are completely airtight. Use at least 20-gauge cable for all the wiring!

Tutorial:

When printing the baffle, you can insert 8x3 magnets if you plan to use a grill. There’s also a cloth holder, allowing you to attach fabric. Simply stretch the fabric over the holder, secure it in place, and glue it to hold the fabric firmly. Make sure to stretch the fabric tightly before gluing for the best results!

To assemble, use 3.5mm threaded screws no longer than 20mm. Before securing the baffle in place, apply silicone or another non-quick-drying adhesive into the groove to ensure an airtight seal between the enclosure and the baffle.

Updating:

I plan to update this design in the near future, so be sure to check back for updates!