Can someone help me with the (electrical) design of my bluetooth speaker? And also, how can I remove speaker shielding? Answered
Hello everyone, I would like to build my first Bluetooth speaker but I like some challenge since I study Electrical Engineering. That's why I looked up a lot of different designs and combined mostly these two: from Greatscottlab and that of Barry_L. I'm pretty sure my design will work, however I still like to have some advice on how to improve it.
For example, I'm not sure if it's a good idea to connect a capacitor like the Barry_L design, because if I switch between the 3.5 mm input and the bluetooth board, the cap still contains energy which can only be discharged with a resistor. But how big of a capacitor can I use or is necessarry to achieve a good bass? I calculated that in order to make the capacitor effectively discharged in 1 s that I need a resistor of 3.125 kOhm at least. But this only applies to the bluetooth module and not to the 3.5 mm jack amp.
These are the electrical components that matter most to this question:
Step up module
(I'm also planning to add a NFC tag and two passive radiators)
Secondly I sort of have a problem with my speakers, the units are magnetically shielded. I found out that this is done so there is no interference with crt screens. This makes the speakers pretty heavy and also large. Do any of you know how to remove this shielding or a better place to find a way how? (google didn't serve me well)
Btw, I didn't got a response from one of the authors of the projects, so I think here might be a better place for advice.