Careful about one hole on the corner. What will happen is that single notes will be emphasized, and others will go MIA. The trick is to port along lines, to maintain back pressure in a more uniform way. Three slits (oblong) that are aimed toward where the soundhole would normally be, will do the trick. The holes might also be oblong in slightly different ways. Aim for same surface area as a single would be, divided among the three. (still in corner, extending away from) (My professional educated guess)





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