Back to projects

Cubo 18

A DIY 18-inch cube subwoofer, built from scratch in plywood

Cubo 18 — Cubo 18 finished and painted

Cubo 18 is a DIY subwoofer build: an 18-inch driver housed in a birch plywood cube enclosure, built from cut panels to a fully painted, finished cabinet.

Birch plywood sheets on a cart at the hardware store

18-inch driver and cut plywood panels laid out on a workbench

Cutting plywood panels to size on a workshop panel saw

Enclosure panels glued and clamped together on a workbench

Internal bracing of the enclosure viewed from above

Close-up of the internal cavity and driver cutout

Assembled bare plywood box with the driver cutout, before finishing

Painted black enclosure, angled view showing the port

Painted black enclosure standing in the garage

Finished Cubo 18 subwoofer, front-on view