I have designed this for home cinema to mount up some harman kardon rear speakers.
Because with the original brackets, the speakers can not be aligned to the upper wall ...
This is important if you have small rooms with tiny space between wall and couch to prevent from intrusive sounds. So this thing generates a pseudo so called "dipol speaker".
That means that the sound is reflected by the upper wall.
You have to print the "clamp" part it with support if you prefer to print whithout support you should print the "clamp (half)" part and stick it together!
I applied spray filler and painted with white acrylic paint. Here you can find a sanding drum to sanding the surface:
You also need:
2 x M8x20mm screws (panhead)
2 x M8 nut
4 x 5x60mm (panhead for wallmount)
some felt (to stick it between the parts and between the parts and speaker)
- acrylic paint (one wich you prefer)