[Eng sub] How I modify 3$ cheap speaker into a 3D printed back-loaded horn speaker 

I have modified a speaker box of Daiso 300 yen speaker.
It seems that wood is usually used for the enclosure, but this time we designed and produced a speaker enclosure using a 3D printer. So it becomes a plastic enclosure.
The design of the back load horn speaker was based on the following link.
Reference: kanon5d.web.fc2.com/2015_6/kou...
NEW VIDEO: How to make a concrete-filled speaker • 【DIY】コンクリート充填スピーカを作ってみ...
★ Parameter
Spread coefficient: 1.0
Pipe length: 85 cm
Crossover frequency: 200 Hz
★ Attention
This design is just one of many design examples. So this design method is not absolute. Make your own speakers that you pursue.
★ Recommended videos
[Electronic DIY] I made a battery type spot welder • 【電子工作DIY】バッテリー式スポット溶接機...
How to make a micro D-class amplifier • 【電子工作】超小型D級アンプの作り方 | H...
Electric warmer handy warmer made with CPU • 【電子工作】CPUで作る電気カイロ ハンディ...
[Core i7] How to make CPU mug warmer • Video
★ Click here for channel registration
/ @ichiken1

Наука