For strength, I recommend printing this on its side so the layer lines are parallel to the axis of symmetry.
I made the original a couple of years ago because we have a small bathroom and there was no other place to put the speaker! The design includes cord management & strain relief.
This updated design aligns with the barrel jack power supply location perfectly. Printed in PETG but I'm sure it will work with most filaments.
The author marked this model as their own original creation.