Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

Advice on first bluetooth speaker build
Advice on first bluetooth speaker build
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 24th September 2018, 06:00 PM   #1
hmsdexter is offline hmsdexter
diyAudio Member
Join Date: Sep 2018
Default Advice on first bluetooth speaker build


I live in rural Swaziland and have little access to things, and very low funds, I am using this project to teach kids at an orphanage how to plan, purchase and solder an electronics project.

The basis for the project:

I have a busted desktop speaker set that I want to transform into a battery powered speaker set. I have a friend coming from the US soon that can bring me a couple of small items from amazon.

What I want to achieve:

Be able to run the speakers from mains or battery

Connect and play via bluetooth (aux would be a bonus, but hardly needed)

Have a volume knob.

Supplies on hand:

24v 2a power brick. Could probably find a 19v laptop psu if needed.

12v2.2ah Sealed Lead Acid Battery

2x 5w 4ohm drivers

3x dual potentiometers from the busted speaker set. (originally Volume, Treble and Bass)


Would this board be suitable for driving the speakers, and can I solder on my own POT for the volume control.


What charging board can I use, that could work with the 24v 2a supply?

Does anyone know if this board would have the characteristic ground loop noise, and is there a way to mitigate it?
  Reply With Quote


Advice on first bluetooth speaker buildHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Portable Bluetooth Speaker Build With Passive Radiators Build PedroDeMio Multi-Way 34 22nd August 2019 03:09 AM
Bluetooth speaker build... more bass!!! Hayden Multi-Way 4 26th July 2018 07:32 PM
First Bluetooth Speaker Build Tips bellamym Class D 6 17th September 2017 12:42 PM
"Portable" bluetooth speaker build advice Sonicfury405 Multi-Way 17 16th March 2017 08:26 AM
Bluetooth Speaker (Build Log) MatthewP Everything Else 0 4th November 2013 08:39 AM

New To Site? Need Help?

All times are GMT. The time now is 12:39 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio