Powerful Portable Bluetooth Speaker 2x5W
Intro: Powerful Portable Bluetooth Speaker 2x5W
Bluetooth Speaker
Make your own powerfull Bluetooth Speaker with some extra features, easy explained, cheap and handy to use for less then 15$.
Maybe you have some components which you don't need to buy like 5W speakers and some lithium batteries to make it less expensive like I did.
In the following steps I will try to explain on the easiest way how to assemble this bluetooth speaker, people who don't know a lot of electronics will understand I hope :)
This speaker has a very long battery life when you use good 18650 lithium batteries.
I found 4x 18650 lithium batteries which I used in parallel and has a total of 6000mah, the speaker plays over 24 hours on the highest volume which is very loud.
You can charge the speaker with a micro USB, which is very handy!
I also added a voltmeter display wich I bought on ebay so I will know when the batteries are almost empty.
The last new thing I added to the speaker is the 5V usb out so you can charge your smartphone or other stuff.
In the next video I will show you the finished speaker and play a song to show you.
STEP 1: Collect the Parts You Need
What do you need?
- Bluetooth audio usb:Ebay
- Micro usb charger module(with protection):Ebay
I bought 2 of these just because they are very usefull.
- 5V usb output:Ebay
- 2x5W amplifier:Ebay
I should really recommand THIS Amplifier, after I building it with the normal one I deccided to add a volume switch because the bluetooth usb has a very loud startup sound!
If you want to add a single speaker you can use a mono amplifier (or buy a 5w mono amplifier)
- 3.7V lithium 18650 battery:NKON
I found my lithium battery in a router/modem, you can easy find them in laptop batteries, the battery of a drill or other electrical stuff. You just need a 3.7V Lithium Battery (You can also buy them on the internet)
I would really recommend to search very good after these because they aren't cheap.
- 3 position switch:Ebay
The one I used did I find from an old toy
- 2 Speakers 5W:Ebay
Again i found mine in some old pc speakers
- Rubber (or passive radiators)
- Wires
- Material to make a box
STEP 2: Put the Parts Together
Put the parts together
Connect the parts with wires which you can see in the picture.
You need to dissasemble the bluetooth usb first and solder it like I showed in the picture.
It doesn't matter or the bluetooth usb gets 5V or 3.7V, it will work both.
Something I forgot to add in the schema is the V-meter display, just connect it to the + and - of the lithium batteries.
I used a 3 position switch, position1 is aux input and position2 is bluetooth mode.
STEP 3: Put Everything in a Box
Here are some pictures during the assemblage of the speaker.
I made the box out of wood, this would give you an excellent audio quality.
I didn't bought passive radiators but found some rubber and I tried to make it by myself.
STEP 4: Give the Final Touch to the Speaker
I need to put a grill in front of the speakers, but I like it more without them to make pictures to post :)
If you have any questions, feel free to ask anything!
180 Comments
GabeG26 3 years ago
gary974 6 years ago
Hello,
Sorry i'am french
is it possible with all bluetooth dongles or those that make audio?
merci
Bahadrkok 3 years ago
SuryaR36 6 years ago
viniebaby 7 years ago
afiqr6 7 years ago
can i take a speaker and upgrade it with add a bluetooth...
viniebaby 7 years ago
ckarelaid 7 years ago
hi
can you tell me the size of the box?
and would these speakers work too with this setup?
http://www.ebay.co.uk/itm/2pcs-3-inch-4Ohm-4-8W-10W-20W-Full-range-Audio-Speaker-Subwoofer-Loudspeaker-/141986969806?hash=item210f1538ce:g:gUEAAOSwcL5XMFVo
boompjes 7 years ago
Hoi, mijn speakers werken! Blijkt dus dat de charging module kapot was. Denk dat ik met het solderen de chip heb doorgebrand. Voordat ik de case ga bouwen had ik nog iets cools gevonden wat ik er bij zou willen bouwen. Ik heb alles aangesloten zoals het hoort volgens die instructable. Maar het werkt niet. De transistor heeft 0.7V ongeveer nodig om aan te gaan. Als ik gewoon de Aux aansluiting van mijn mobiel aansluit gaat het licht niet aan. Herna heb ik gemeten hoeveel volt er op de aux staat. Zegt het 0 volt. Maar het geluid werkt wel. Als ik de bluetooth module aanzet staat er altijd 0.7V op de Aux en staat de led dus ook aan. Maar het voltage verandert niet dus weergeeft het ook geen ritme. Hopelijk kan je mij hier mee helpen.
De instructable: https://www.instructables.com/id/Music-LED-Light-Bo...
Bedankt voor de mooie instructable Bartroosen!
boompjes 7 years ago
pegl12 7 years ago
Hey bartroosen im thinking of making a bluetooth speaker but i need some help, can the charger support 4 batteries? and im thinking to buy 2 2*3w amp and 1 bluetooth, if the bluetooth is 5v do i need a step up converter ? and if the amps are 5v do i need a step up converter? sorry for bad english
Devesh Parashar 7 years ago
How do the rubber passive radiator alternatives perform?
Is the low end improved?
swaldo 7 years ago
swaldo 8 years ago
Devesh Parashar 7 years ago
You should do an instructable for this.
Devesh Parashar 7 years ago
You should do an instructable for this.
bartroosen 8 years ago
Thanks for the idea!
CDaven88 8 years ago
bartroosen 8 years ago
Of course they will work ;) I have tested the aplifier with 4ohm 10W speakers and still very loud and good sound.
majk g 8 years ago
Please help
overheats my amplifier until until it shuts down