Designed for the Blitzwolf BW-WA4 portable speaker which I use as a soundbar, so that it is more angled and the high frequencies can reach the ears better;).
You can use the onshape model to adjust the dimensions to your speaker and liking: https://cad.onshape.com/documents/14672189670118fd5c110351/w/11b781b6d7d4342ebf138ee8/e/9c33198b18e5440e4b59de66?configuration=angle%3D0.4363323129985824%2Bradian%3Bdepth%3D0.056%2Bmeter%3Bwidth%3D0.23800000000000002%2Bmeter&renderMode=0&uiState=656cdf484c04bf5ddd3c49df
Print on the flat back side.
The author marked this model as their own original creation.