Xiegu G90 Speaker Sound Reflector / Waveguide

This is my G90 sound reflector. There are many like it, but this one is mine.

And, of course, it can be yours as well.

This reflector differs from others in a few important ways. Rather than optimizing primarily for printability, it prioritizes acoustic performance. It uses an ellipsoidal reflector, which unfortunately requires support material (gasp!). But I know you're strong and can handle it.

The reflector is large enough to meaningfully redirect sound toward the operator instead of simply acting as a containment cap. The walls are 3.5 mm thick, providing enough mass to reduce sympathetic vibrations (we want the sound reflecting from the walls, not causing the walls to become passive radiators).

The reflector friction-fits over the top of the G90 using the radio's existing screw heads for repeatable positioning and retention. It installs in seconds, removes just as easily, and stays securely in place during normal use. No screws needed. No tape needed. Nothing else needed.

The example shown was printed on a Prusa CORE One with a 0.6 mm nozzle using recycled PCTG. For best acoustic performance, you want a completely solid part with the smoothest possible interior surface (I achieved this using 20 perimeters instead of traditional infill).

There are two versions. The second one is recommended for PETG or PCTG or any filament where warping is an issue. It cants the front right corner slightly inward to compensate for warping outward.