Bookshelf Speaker Box that can be filled with sand 3D print model

cgtrader

Human: 3D printing makes it easy to craft all kinds of impressive shapes for horn designs. Unfortunately, plastics don't perform well on the acoustic side, resulting in a major drawback. One problem is that the walls will resonate in a dissonant way. To solve this issue, Speaker Box has hollow walls that can be filled with sand, which adds weight to the box and makes it much heavier (1775 grams) for its size. This added weight helps cancel out the vibrations in the box's walls more quickly. The assembly of this speaker box is quite simple. First, print all the parts separately. Next, glue "inside L.stl" and "inside R.stl" together to form a solid core. Then, glue this core into "outside L.stl." Finally, complete the box by gluing "outside R.stl" in place. The box is now ready for filling with sand. On the provided photo, it can be seen that my box was filled with garden sand. It's worth noting that finer sand produces better results, and the drier the sand is, the more effective it will be. Using a funnel makes it easier to pour the sand into the box. Once the sand is in place, top it off with "sand lids" (.stl) for an even finish. Attaching these lids and then shaking the box helps distribute the sand evenly throughout its nooks and crannies. Next, install the speaker by routing the wire through the inside tube. In this example, hot glue is used to seal the tube and ensure a tight fit. Later, I applied blue paint for a smooth finish, making the speaker box more visually appealing. When printed at 100% scale, the dimensions of the speaker box are 170 x 120 x 100 mm, with the speaker bore having a diameter of 60 mm. The mounting holes for the screws are positioned 50 mm apart from each other, and the depth of the speaker chamber is approximately 77 mm. The design is fully scalable to accommodate speakers of different sizes. At a resize of 110%, the speaker bore increases to 66 mm. When increased by 120%, it reaches 72 mm, and at 130%, it measures 78mm in diameter, continuing to grow as you adjust the size further. This model was tested on an FDM printer with a resolution of 0.2mm and a nozzle size of 0.4mm. The printing settings were: 3 wall layers, 4 top and bottom layers, infill at 20%, and a skirt consisting of 2 lines. Using these settings resulted in a total print time of approximately 52 hours and a material usage of 492 grams.