Peerless PLS-P830985 DIY Speakers (2 pcs)

This is a speaker I self-made around 2018. I used it occasionally for about a year after making it, but it has been mostly stored away since then. I confirmed its operation in February 2025, and it produced sound without any issues.

The speaker unit is a Peerless PLS-P830985.

The enclosure was created using a 3D printer, and I believe the material is PLA. There are layer lines characteristic of 3D printing on the surface. The structure resembles two nested spheres, with four holes at the back of the inner sphere connecting to four holes at the front. I believe I designed it this way to function somewhat like a bass reflex system.

I think the sound quality is generally clear, but I don't have the ability to discern subtle differences, so some listeners might perceive issues with the sound quality. No sound-absorbing material or anything else has been added inside. Since it's made of plastic and is quite light, there might be some box resonance.