Introduction: 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.

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Specifications:
- 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



Step 1: Parts & Materials

The links are just alternatives. Read the next step and find out how I got my parts for under $15 :))

Parts & Materials:
- Stereo Bluetooth Module (Updated: $6 Cheaper)
- 2x3W Speakers (Updated: Now Priced $2.80)
- 2x3W High Efficiency SMD Amplifier
- Passive Driver (optional)
- USB Li-ion Charging Module
- 1000mAh Li-ion Battery
- Simple Sliding Switch
- 3.5mm Stereo Jack
- Eyewear Container
- Matt Black Spray Paint

Tools & Equipment:
- Cordless Drill (w/ 5mm Bit)
- Rotary Tool (w/ Flute Bit)
- Leatherman Multitool
- 40W Soldering Iron
- Hot Glue Gun
- Super Glue


Step 2: Hacking Time! - How I Got My Parts for Free!

That Is An Awesome Case! Where Did You Get It?
My dad is an eye doctor & surgeon (ophthalmologist). Since I'm a guy who uses corrective lenses, I have a huge pile of unused eye-wear containers. One day I came across this funny, Garfield case (from my grade school days). The first thing that poped-up in my mind was to make a Bluetooth speaker out of it.

Where I Got My Speaker Drivers:
Okay let's get started! To start of, I got these awesome "Speed-Boat Speaker" for a cheap price of P320 ($6.50). Of course cheap products aren't that reliable, it broke after 6 months. Since I'm a hobbyist, I prefer breaking down defective products and studying the parts instead of surrendering it to the warranty center.

If you want to buy better ones, PartsExpress.com serves a wide variety of options!

Where I Got My Amplifier:
I got my amplifier from DealExtreme (dx.com). Apparently it's a discontinued product. I got it for $1.70 on a clearance sale.

Where I Got My Bluetooth Module:
I bought my Bluetooth module from DealExtreme (dx.com). Again, my Bluetooth model was discontinued and no longer available. I got it for $6 on a clearance sale. Right now there's an alternative model but costs more than the previous one ($12).

Isn't this just a repackaged project?
No it's not! The speaker drivers inside the "boat speaker" was indeed good but to be honest, it didn't come with the best built in amplifier. It was made from bare SMD transistors and not a SMD I.C. package, it was not that effecient, and lacked power to drive off these 4 ohm speakers.

Step 3: Drilling the Holes for the Parts

1st.) Use your pencil to mark the soon to be cut holes.
2nd.) Get your rotary tool and flute bit, cut off the plastic on where the speakers will be mounted.
3rd.) Attatch a 5mm bit to your cordless drill and bore a hole for the auxiliary input.

Step 4: Painting the Case

Before mounting the speakers and components be sure to paint the case first. You don't want to spray paint over your drivers

Looking good on a matt black paint job! :D

Step 5: Hot Gluing the Speakers & Components

Carefully hot glue the speaker drivers to your plastic casing. Be sure to cover all the gaps, it must be 100% airtight. If air escapes the case, the "PartyBar" would sound like crap :D

If you are concerned that the hot glue could melt because of the heat given off by the amplifier module. There's nothing to worry about since the "class AB high-efficiency amplifier" doesn't heat up that much.

Step 6: Soldering Them Together

Solder all the modules together. This project requires a little experience in electronics. If you need help, feel free to write a comment!

To make your work easier, you can follow the block diagram above.

Step 7: Sealing the Enclosure

Apply enough superglue around the edges to seal the enclosure. Be sure to cover all the gaps, it must be 100% airtight. If air escapes the case, the "PartyBar" would sound like crap :D

Step 8: You're Done!

Enjoy your PartyBar!

Step 9: Meet the "Version 2.0" (SUPERCHARGED)

Meet AirJam, the DIY Supercharged Bluetooth speaker. Ready your tools, we are making one from scratch! Thanks to your comments and suggestions, I was able to make a v2.0, named AirJam.

Click Here To Visit: DIY Supercharged Bluetooth Speaker (v2.0)
______________________________________________________

SMALL SIZE, BIG SOUND:
Despite AirJam's tiny size, it has the ability to surpass its competitor's performance. Thanks to the sandwiched speaker orientation, I was able to fit 4 Full-ranged speaker drivers in one tiny enclosure (2x7x2"). A "passive radiator" was added to extend the lower bass frequencies, thus resulting to a much punchier bass. Compared to its rivals, the AirJam has 4 active drivers and one passive radiator, offering deeper bass and wider mids.

CHANGE TRACKS WIRELESSLY (works with Siri!)
Thanks to Bluetooth 4.0, AirJam can receive Bluetooth transmissions up to 30 meters! Whether you are using your laptop, tablet or phone, you can easily switch tracks wirelessly. The handsfree feature works great with Speakerphone, Skype, FaceTime and also Siri!
______________________________________________________

Specs & Features:
- Includes Handsfree Microphone (Speakerphone Function)
- Quad 3W Fullrange Speakers (4Ω - 35mm drivers)
- Quad 3W High Efficiency Amplifier (class AB)
- Li-Po Battery 1,300mAh (20hrs Playback)
- Command Buttons (Volume/Pause//Play)
- Tested dB (via SPL): 96dB @2ft
- 30m Bluetooth Range (v4.0)
- Single Passive Radiator
- 3.5mm Auxiliary Ready

Comments

author
PuiG made it! (author)2015-03-23

this is mine !

IMG_20150323_185011.jpgIMG_20150323_184949.jpgIMG_20150323_185025.jpg
author
matbh (author)PuiG2017-01-24

congratulations!

author
Brucker11 (author)PuiG2016-01-10

Hi Puig,

Do you by chance have a schematic for your wireless speaker?

Thanks!

author
PuiG (author)Brucker112016-01-10

Ill will open it and take some pictures aswell drawing the schematic.

author
Brucker11 (author)PuiG2016-01-14

Did you get a chance to draw up the schematic and take pictures? Thanks for the help!

author
PuiG made it! (author)Brucker112016-09-02

Hope it helps

PORTABLE SPEAKERS.png
author
PuiG made it! (author)Brucker112016-09-02

Sure

PORTABLE SPEAKERS.png
author
tmoney45 (author)Brucker112016-02-13

looking at it i know it doesn't work

author
ansaridanish (author)PuiG2016-09-01

Hey dude!! Can u help me with the wirings pls :)

author
PuiG made it! (author)ansaridanish2016-09-02

here you have

PORTABLE SPEAKERS.png
author
kdochow (author)PuiG2015-06-11

You getting any buzzing or extra noise?

author
PuiG (author)kdochow2015-06-12

When i switch it on i hear a low piiiiiiiii, but when the music start it stops, or at least i dont hear it.

author
Airborne. (author)PuiG2016-01-02

i have the same problem, have you found a solution yet? If yes could you tell us so people with the same problem can fix it. Thanks in advance

author
thborges (author)Airborne.2016-01-05

I've got rid (almost) of the piiiii in a similar project adding an electrolytic capacitor in the input (+ and - terminals) of the bluetooth module. A 470uF electrolytic capacitor removes some noise, but a 1000uF or 2000uF was better in my project. So, I think you could try values between 470uF and 2000uF. I'm not an expert, but suspect that low noise to be radio waves propagated to input wires as when I increased the volume the noise also raised.

author
ansaridanish (author)thborges2016-09-02

hey! Needed help with wirings!! Can u help plss

author
PuiG made it! (author)ansaridanish2016-09-02

Hope it helps

PORTABLE SPEAKERS.png
author
PuiG (author)thborges2016-09-02

will try, thx

author
dmahato (author)thborges2016-04-18

Hey, I am not a electronics person; but planning to make one of these. Help.

Where do we add those capacitor ?

connecting -ve and +ve power input of bluetooth?

or

one in each line of -ve and +ve supply ?

author
tmoney45 (author)thborges2016-02-15

It seems that the current won't go through the capacitor

author
nbergan20 (author)kdochow2015-12-22

try to use a different battery for the Bluetooth USB port, that is compatible. If you plug the audio into a smartphone and play music, for example and it doesn't buzz strongly at any frequency then it is the battery. I have also found that using a cut, female USB cable for power only (mine doesn't support audio through usb) and a lithium-ion rechargeable battery with the power to charge a smart phone, gets rid of most all buzz, and a cut male 3.5mm (I think) cable for audio to the amplifier.

author
chrisfornaro (author)PuiG2015-05-11

What gauge wire did you use? Did you have to use any resistors? I am new to this and would love any help!

author
PuiG (author)chrisfornaro2015-05-11

its 24 AWG and I did not use any resistor

author
plal75 made it! (author)2014-09-07

wanted to make something like this for long..thanks ASCAS!!

Have used parts from the link, used an acrylic perfume box as case :)

There is a small problem though..there is a background noise, quite audible when song is playing at low volume/ silence in the song..Please help!!!!

BT1.jpgBT2.jpgBT3.jpg
author
ASCAS (author)plal752014-09-07

That's an awesome build. Have you tried connecting a 10uF Capacitor to both lines channels?

author
rgada1 (author)ASCAS2016-01-15

Hello! I just read the datasheet of TP4056(Battery charging module).It say it Maximum Battery current it can hold is only 1000mA. Is is true? or i have read it wrong?And as you have used 2400mA battery.Can let me know at resistance value to have changed/modifyed in the module?Thanks. Awsome Work!!.Help appreciated.

author
dmahato (author)rgada12016-04-17

Charger module for lithium batteries (1S) come at 1Amps rate only. Anything beyond that will need battery protection. So does not matter if you use 1Amps or 2Amps charger; the battery will charge at a maximum of 1Amps/hour rate only.

Coming to Lithium battery; the maH in battery denotes the capacity. So technically a 2400maH battery which is nothing but 2.4Amps*Hour; will charge in around 2.5 to 3 Hours if you are using a power source 1Amps or higher. If you are using a old mobile charger; which come with 700ma or 800ma rating, then the charging time will increase.

author
rgada1 (author)dmahato2016-04-18

ook.thanks alot

author
Darronm1973 (author)ASCAS2015-10-27

This is what I have
DROK
® Mini 5V Digital Audio Amplifier Board USB Powered 2-Channel Stereo Amp DIY 3W+3W 470uf
And I want to substitute there amp for mine and add another speaker without screwing up here CIRCUT and still be able to access the Bluetooth. Can you instruct me please

author
Darronm1973 (author)ASCAS2015-10-27

I have a question if you would be so kind to answer. I'm building a few of these for some music artists with a cheap auvio single speaker bluetooth square and I want to bypass there mini amp and use a drok 3w/2 amp module with a pot volume control. How can i bypass there amp and add mind without totally retiring there system ?

author
plal75 (author)ASCAS2014-09-07

Nope :( ...have used a 104 (0.1uF) as you had in your pic. Should I try a 10uF instead at each channel's input?

Thanks for your response, appreciate it :)

author
mjong (author)plal752015-10-25

You can put a pulldown resistor between the + and - sides of the amp

author
StevenH11 (author)plal752015-06-11

Why is my mobile battery charging to 6+ volts? I tried it with 2 batteries and they did the same! The funny thing is that once i disconnect the batteried the votlage keeps on rising. Whis is this?

author

hello,

It is possible to have a shema? I don't understand the connections with the modules you advice In dx.com

The capacitors 104 have it mate sense ? where they must trendy ?

Thank

author

hello,

It is possible to have a shema? I don't understand the connections with the modules you advice In dx.com

The capacitors 104 have it mate sense ? where they must trendy ?

Thank

author
Raitis made it! (author)2015-07-17

Since most of people seem to like this, I'll show it here as well.

Made it mostly following your instructions for electronics part, thanks!

IMG_3627.jpg
author
matgras (author)Raitis2015-07-26

I've seen that one before, didn't you make a reddit post about it?

author
Raitis (author)matgras2015-07-26

I did and it somewhat took off. (:

author
Yoelilev made it! (author)2015-06-30

Hi ASCAS! This is my build :)

I got the speakers from a broken Monster Clarity speaker, the box from an art shop and everything else from china and from recycling old electronics.

I'm thinking about building a larger and stronger bluetooth speaker, maybe 2x6W, or 2x10W. any suggestions?

Thanks!

IMG_0896.JPGIMG_0896.JPGIMG_0898.JPGIMG_0899.JPGIMG_0897.JPG
author
TheRedFez (author)2014-04-24

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?

author
ASCAS (author)TheRedFez2014-04-24

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

author
andrea biffi (author)2014-01-15

great idea using a glasses container!

author
ashishs217 (author)2017-08-05

when i connect my usb bluetooth module to my intex hometheater it doesnt show me the pc mode in home theater and and also didnt get the music from my hometheater also no getting output from aux ,no aux port is present in my bluetooth receiver ,so what to do how to get output?plz suggest me

author
bhvm (author)2017-05-07

Lovely build quality!

author
KieraS3 (author)2017-05-06

wow. there are quite a few cool looking Bluetooth speakers out there, but its always nice to DIY! Nothing beats the satisfaction. You can also get modules at Sparkfun Electronics and other places.

author
JotS (author)2017-05-03

Can the battery be 4000mah? Also how much volts is the battery? Would 3.7v work?

author
Lawdogjr (author)2017-03-30

Could I use one speaker that is larger in diameter, rather than the 2 left and right speakers. If so what type of amplifier would I need and what else would need to change

author
mark.mailhot (author)2014-11-15

now correct me if im wrong but i think the switch gets wired in like so and the bluetooth and AUX just get kind of soldered in junction with each other. {sorry for the lack of color)

schematic.jpg
author
ASCAS (author)mark.mailhot2014-11-18

Oh, that's what I did it although I forgot to illustrate the switch on the diagram.

author
CodyR6 (author)ASCAS2017-02-21

I can't figure out the switch, any help? I have s 3 pronged switch here https://www.amazon.com/gp/product/B007QAJUUS/ref=o...

author
niccotaglia (author)ASCAS2015-02-25

I never used a soldering iron,how can I make a bluetooth speaker out of my wired AA battery powered speaker?
Also,can I make it lithium battery powered? It runs on a 4,5 V power
Thanks in advance

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Bio: Hi I'm Angelo! I am a 18 y/o college sophomore taking my majors in BS-ECE at the DLSU. I use my course as ... More »
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