Cabinet for 2-way ported loudspeaker

This is a (not yet tested) design for a 2-way high fidelity loudspeaker.

Concept: Cabinet rigidity and avoidance of bass or midrange resonances is important for a loudspeaker, But thick, heavy cabinets aren't very practical for 3D printing(!), so this design uses a "matrix" structure inside to provide high overall rigidity and to move all vibrational modes to higher frequencies. A matrix structure is similar to 'infill' on a 3D print, but more sparse since enough internal air volume is impo