Sand filled Bookshelf Speaker

cults3d

A Speaker Box made of plastic? The walls of the box will resonate in a bad way for sure. Therefor this one has hollow walls that can be filled with sand :-). This to stop those unwanted sounds. The sand makes the box way 1775 gram, so its really heavy for it's size :-) Inside a Horn is incorporated to make the little speaker appear much louder. For one box you need: 1X inside L.stl 1X inside R.stl 1X outside L.stl 1X outside R.stl 2X sand lid.stl After gluing it together it's filled with the sand. I took it from my garden. It is better to get fine sand that is as dry as possible. After filling the hole can be closed with the “ sand lids”. See the Photos to get a better idea what I'm talking about :-) The the Speaker can go in. The wire to the Speaker leaves the chamber trough the special tube. After the wire is inserted close the tube with Glue to make it airtight At 100% size the dimensions of the Box are 170 x 120 x 100 mm. The Bore for the Speaker has a diameter of 60 mm. The mounting holes for the screws are 50 mm apart from each other. The depth of the Speaker chamber is about 77 mm. Of course the Box is scalable to let it fit a Speaker with different installation size. At a resize of 110% the bore for the Speaker is 66 mm. 120% =72 mm, 130%=78mm,140%=84mm, 150%=90mm, etc. 52 hours and 492 gram of material was needed for one Box If you have any questions, feel free to ask :-)