Speaker Box and Lid

thingiverse

I made this custom subwoofer enclosure to replace the standard one on my Logitech speaker system for PC. The hole for the speaker was designed specifically for a 4-inch woofer from my Logitech system. Since I'm not an audio engineer, I can't confirm if this is technically correct for speakers or subwoofers, but it was a fun project to undertake. To give a solid wall for sound to bounce off of, I'm printing it with 30% infill and three perimeters. The screws required are M3, about half an inch long, but they don't need to be that long. I edited my previous post: The speaker hole was dimensioned based on the speaker I plan to install, which is not the Logitech speaker. Although the Logitech speaker doesn't sit flush in the hole, it creates a tight seal. The box sounds great with the stock 4-inch woofer. To improve sound quality, I stuffed some loose cotton into the box - enough to cover the plate behind the speaker but not enough to block the port. This sounded better than having nothing inside at all. I plan to buy a small powered amplifier circuit and mount it on the box so I can get more out of the speaker I'll be installing later. I added an alternate version, which is currently printing. I think a thinner channel might be a better way to port sound, and the speaker hole is now properly sized for my 4-inch speakers (the first one was drawn from incorrect dimensions on the website before they arrived). With this design change, the speaker should fit flush into the plastic. Once everything is wired up, I plan to seal the lid and box with RTV silicone or liquid electrical tape.