Abstract: A method for making an audio speaker cover using at least some of the following steps, not necessarily in the sequence listed: evolving a CAD first stage model of an audio speaker cover with an array of apertures; determining a desired blank workpiece manufacturing configuration by electing to process a single blank workpiece or an assembly of stacked blank workpieces; affixing the single blank workpiece or stacked blank workpieces in relation to a CNC machine; addressing one or more of the stacks simultaneously or sequentially to create apertures in the audio speaker covers with parallel walls and square shoulders to provide strength while minimizing losses in sound transmission, the apertures and intervening lands providing a visually attractive appearance to an observer.

Abstract: An audio speaker cover with a central region and a peripheral region. The central region has a surface that faces an observer and a speaker cover body below the surface. The audio speaker cover body defines a plurality of apertures with lands between the apertures. The apertures have cylindrical walls that meet the surface orthogonally. Precisely engineered apertures permit minimal sound transmission loss and allow a high aperture density without sacrificing the ability of intervening lands in the audio speaker cover to protect an underlying speaker.

Abstract: An audio speaker cover with a central region and a peripheral region. The central region has a surface that faces an observer and a speaker cover body below the surface. The audio speaker cover body defines a plurality of apertures with lands between the apertures. The apertures have cylindrical walls that meet the surface orthogonally. Precisely engineered apertures permit minimal sound transmission loss and allow a high aperture density without sacrificing the ability of intervening lands in the audio speaker cover to protect an underlying speaker.