Building my first BT-speaker!



Hi guys! I'm new here on the forum so i thought I'd start with a short introduction :)

I'm a 28 yo guy from Sweden! I have experience in mixing music and also some basic electronics knowledge but I've never built my own speakers before. I want to build a simple portable bluetooth-speaker with the Dayton Audio ND65-8 (2-1/2") and a simple amp-board. The enclosure will be made from MDF.

Pictures below!

I'll list the components here:
Drivers: 2* Dayton Audio ND65-8 (2-1/2") (
Amp: OEP30Wx2 (
Battery pack: Li-Ion 1P3S pack, 12V 3500mAh (
Input source: Simple BT-module (USB BT with 3.5mm line output)

+ BMS protection for battery pack
+ DC-DC isolator for BT-module
+ DC-DC Step-down converter to give BT-module 5V power from 12V battery
+ Potentiometer for volume control
+ Micro USB input for charging
+ DC-DC Step-Up converter to charge batteries with 12V from 5V USB input

What do you think of this build? Anything I should change/modify? All help is appreciated !

I may have forgotten something. Just ask if you have any questions! :)


Simple connection overview:

3D-Model of the build:
Skärmavbild 2019-11-20 kl. 18.47.56.png

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Skärmavbild 2019-11-20 kl. 18.48.17.png

Skärmavbild 2019-11-20 kl. 18.49.04.png

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