5 model

Free

Bassport / Waveguide for ported speakers

Printables

Free

Flared bassport 75mm

Printables

Free

Subwoofer port / Bass Reflex Tube

Printables

Free

Philips SHP9600 Mod: Driver Cover with Bass Reflex Port (Semi-Open)

Printables

Free

Subwoofer bassreflex / port tube

Printables