DIY Bluetooth Speaker

Picture of DIY Bluetooth Speaker
Meet the PartyBar™! Make a wireless speaker, loud enough to fill an entire room! With a budget less than $15, you can have your own Bluetooth speakers made from scratch materials! It's slick, stylish, descent and most of all it's compact and fits in your pocket. This is a great weekend projects for enthusiasts and audiophiles.

It's small but packs quite a punch. With the help of "35mm Neodymium Drivers" the PartyBar™ delivers a solid stereo sound. It's equipped with a 1000mAh Li-ion battery meant to last for 9 straight hours, replacing it with a 2,400 LiPo will result to a staggering 22 hours of continuous playback!

Are those ready made speakers?
A lot of people thought that this was a ready made product, well it's not. It's actually made from recycled materials such as broken speakers, radios & old modules. The project box came from my eyeglass's container :D

Techie Description:
The PartyBar™ is equipped with two outstanding Neodymium Speaker drivers. Neodymium itself is a rare-earth metal. Magnets made from neodymium are light and very powerful, making the speakers more compact and gives a higher clarity rate.

Of course good speakers must be powered by good amplifiers thanks to Nsiway's NS4263 dual 3W SMD chip, the PartyBar™ delivers an excellent audio, good enough to compete in today's market. It has a class AB amplifier with a THD rating of 0.1%. A Class AB amplifier delivers fully symmetrical wave amplification, in short the audio given off by this amplifier is pure and clear.


- 1,000 mAh Rechargeable Li-ion Battery (9hrs Playback)
- Dual 3W (4ohms) 35mm Neodymium Drivers
- High Efficiency 2x3W Amplifier (0.1%THD)
- 15 meter Standard Bluetooth Range
- 3.5mm Auxiliary Ready
- Mini USB Charge Plug

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TheRedFez2 months ago

You show 104 capacitors in the pictures, but do not list them in the wire diagram, I'm assuming they go on the power leeds?

ASCAS (author)  TheRedFez2 months ago

Both 104 go to each channel's input. It acts as a simple low pass filter.

andrea biffi6 months ago

great idea using a glasses container!

atorrente4 days ago

good ible. Just a few clarifications. How do you pin the blueooth, charging, and speaker driver module? Also, you used 4-pin bluetooth module which is a different module than what you showed. :)

t0m0tb141 month ago

Do I need two smd amplifiers like it says in the parts list?

no just the one

snowsnooks14 days ago

hi, i was wandering about wether having a 3.3v bluetooth module would be affected by the 3.7v battery.

here is my parts list:


bluetooth module:


Charging module:


metalix25 days ago
should the bluetooth be soldered to simple sliding switch
pratap81 month ago

can any one can help me out by giving a circuit diagram r a rough diagram of connections plz help me dudes

how to attach the speakers with the amplifier????

Hyginx1 month ago

for anyone that had trouble with figuring out where to solder on the amplifier chip, here is a great picture that i used:

jmeakin2 months ago

I have little experience with soldering and am a secondary school student in the UK and am trying to figure out the exact place to solder and if any resistors etc are needed. please could you help


ASCAS, i have everything for this project except a bluetooth receiver, i have this one>>> but im not sure if i can use it without a computer of some sort. any help would be appreciated. Project_Builder. P.S, liking this project! it looks and sounds very professional.

ASCAS (author)  project_builder2 months ago

Oh, you need the type of Bluetooth USB Dongle that has an aux jack. There's no way of getting an analog audio signal from that dongle.

Hyginx2 months ago

Can you put an updated schematic that includes the stuff in the Required parts section?

vglodenis2 months ago

Can you upload a photo of amplifier how to do this with passive radiator? PLZ

ASCAS (author)  vglodenis2 months ago

It's in my other instructable, the version 2.0

pcrotts2 months ago

I've been really wanting to make this but I have a problem. I would like to use the USB powered bluetooth device listed on this page (at bottom), but how do I disassemble/rewire it to work for this? Thank you

Bluetooth V2.0+EDR USB Drive Audio Receiver w/ 3.5mm Audio Male to Male Cable - Black

dark ghost2 months ago

Please can you give me a more detailed version of your orninogramme.

sorry I'm french

General_Pyr02 months ago

Where could i buy some passive radiators like the one you have in the parts picture and used in Air Jam? I am wanting to make my own version but can't find the right size passives anywhere.

pratap82 months ago

can we use 3000mah battery

efes3 months ago

Hello, I have PAM8403 Audio Module DC 5V Mini Class-D digital amplifier board. 3W speakers 4 ohms. jack female connector, 2x 2600mAh batteries connected in parallel.

after switching noise is low, inaudible.

the connection cable jack male to male and connection to the phone noise is louder.

how to suppress noise? capacitor to each speaker?

chris23925 months ago

Hello, Great Idea!! i would like to turn an old pair of speakers that im rather attached to into bluetooth speakers. i did do eletrical engineering at college so i should know how to solder still but im afraid im totally lost when it comes to wiring up speakers, i think i will buy exactly the same boards and speakers as you. would you be able to go into more detail on where to solder the wires to which bits of the boards please? thank you for your time, Chris

ASCAS (author)  chris23925 months ago

Wait for my next speaker build. I'll show a much better board combo.

marvinhorst ASCAS3 months ago

Any idea when this will be available. Considering building this for a school project but need the wiring instructions. Thanks!

Hyginx3 months ago

What capaciters are you using and where do they go? Also, what adaptations would i need to make for 2 100W 4 ohm speaker?

tekletowner3 months ago

If ANYONE has SUCCESSFULLY made this speaker based off instructions, please PM me. Having a bit of issues.

Minitothemax4 months ago
ASCAS (author)  Minitothemax4 months ago

Yup, but you would need a 14v battery for your amp.

tekletowner ASCAS3 months ago


if you use this bt module, can you pair two speakers at a time?

if not, what will it need to do so?

Thanks for the fast answer i really like your speakers.

easy but good i made in just 2 hours. I painted metallic gray looks awsome
ASCAS (author)  Andrew Garfield3 months ago


iaurelius3 months ago
I am interested in knowing more about the battery chraging module. (I am new to ATTEMPTING to design my own portable bluetooth speaker.). I took apart one speaker I purchased late last year, but given its low output, I aim to build one using a 20w module. Where can I buy a battery charging module? I would be more interested in purchasing a class d amp module that already includes the battery charging module..perhaps bluetooth as well, not unlike what OEMs design and use in their portable speakers, though I have not found one which includes everything (excluding the battery and speakers). Any thoughts?
ivmilicevic4 months ago
How did you connected battery to charging module? Is it soldered?
ASCAS (author)  ivmilicevic4 months ago

Yes it is soldered.

ivmilicevic ASCAS4 months ago
Is there some special procedure? Or just like soldering two wires together?
booeyoh5 months ago

I saw in the pictures capacitors attached to the amplifier, but I don't see anything about those in the parts list or instructions. I am not even to novice level, but I am inclined enough to make my parts look like the parts in the picture. So my speaker works (albeit in a tupperware conainter for now), but it would seem that the missing capacitors need to be added, can you let me know what I should add there?

2014-01-25 23.03.34 (2).jpg2014-01-25 21.36.22.jpg
ianni booeyoh4 months ago

I hope the response did not confuse you more and you find that info useful.
Have fun!

ianni booeyoh4 months ago

Lower frequencies in playback draw more power from the amplifier so bass could be attenuated due to voltage drops. That capacitor is added to assure the extra juice lower frequencies need. I don't think that is necessary because you could easily put the battery with short wires, close to the amp and the amp already has 2*47uF tantalum capacitor (which is more than enough).

But, if you want to be sure you could put the extra capacitor between the + and - of the amplifier board (on the pins of the board where you connected the battery wires).

If you want to go deeper you could check the datasheet and you can see that pins 2(L), 15(R) of the PAM8403 are GND pins and 4(L), 13(R) are VDD (+) pins. The best way to connect the capacitors are as close as possible to the power pins (GND and VDD) as are those already on the board (see the picture).

Also you should have in mind low ESR capacitors (don't put the cheapest you can find) because they consume precious power - after all it's a portable device and you should be power effective. Another suggestion is not to exceed 200uF (or this case 100uF on each side) because the bigger the capacitor, the bigger the power draw at startup, and also voltage fluctuations. As the initial power draw increases the battery life shortens a lot.

In my opinion if you really want to add the extra capacitor is to find another pair of tantalum capacitors (THD or SMD) of about the same capacitance and solder them on top of the other ones marked in the picture. Tantalum have really low ESR, lower leakage, etc so are better for this situation.

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