Make Your Own Low Budget Bluetooth Music System

In this project I will show you how I "fused" a dirt cheap bluetooth music receiver with an old speaker of mine. The main focus will be on designing a low cost audio amplifier circuit around the LM386 and the NE5534. The bluetooth receiver costs 4,5$ and the audio amp 3$. So you can call this low budget.

Step 1: Watch the Video!

The video gives you all the info you need to build this project. But in the next steps I will present you my part list and my schematics to make things easier.

Step 2: Get the Bluetooth Receiver And/or Your Premade Amp!

No matter which circuit you want to build, you will need at least the receiver. Here is where I got mine from (affiliate links):

Bluetooth music receiver:

Ebay:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:http://amzn.to/1nVWXIa

Aliexpress :https://s.click.aliexpress.com/e/_dTUwNM7

And if you do not want to build the amp circuit by yourself, you can always buy a premade kit. Here is a nice one (affiliate links):

Premade Amp:

Ebay:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Aliexpress: https://s.click.aliexpress.com/e/_d8hzM8J

Amazon.de:http://amzn.to/1q77lZn

Step 3: Order Your Parts for the Circuit!

Now it is time to order the parts for your circuit. Here is a list of what you will need and where you can buy it (affiliate links):

LM386 Circuit:

Ebay:

1xLM386:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x470µF Capacitor:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x2200µF Capacitor:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x100nF Capacitor:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1xIC Socket: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:

1xLM386:http://amzn.to/1tHIbFB

1x470µF Capacitor:http://amzn.to/1nW0tlX

1x2200µF (1000µF also works) Capacitor:http://amzn.to/1nW0tlX

1x100nF Capacitor:http://amzn.to/1G29rnq

1xIC Socket:http://amzn.to/1tHInou

Aliexpress:

1xLM386: https://s.click.aliexpress.com/e/_dUCCV03

1x470µF Capacitor: https://s.click.aliexpress.com/e/_d7IrB2B

1x2200µF Capacitor: https://s.click.aliexpress.com/e/_dWrNxN9

1x100nF Capacitor: https://s.click.aliexpress.com/e/_d8TSem7

1xIC Socket: https://s.click.aliexpress.com/e/_dU34FV5

NE5534 Circuit:

Ebay:

1xNE5534:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

3x100nF Capacitor, 1x22nF Capacitor:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

2x470µF Capacitor, 1x2200µF Capacitor:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1xBC637 NPN Transistor:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1xBC640 PNP Transistor:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

3x100k Resistor, 1x10k Resistor, 1x100 Resistor, 1x47 Resistor:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1xIC Socket:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1xSilvered copper wire:http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:

1xNE5534: -

3x100nF Capacitor, 1x22nF Capacitor:http://amzn.to/1G29rnq

2x470µF Capacitor, 1x2200µF Capacitor:http://amzn.to/1nW0tlX

1xBC637 NPN Transistor: -

1xBC640 PNP Transistor: -

3x100k Resistor, 1x10k Resistor, 1x100 Resistor, 1x47 Resistor:http://amzn.to/1tp60Rh

1xIC Socket:http://amzn.to/1tHInou

1xSilvered copper wire:http://amzn.to/1E8p1fy

Aliexpress:

1xNE5534: https://s.click.aliexpress.com/e/_dVZPIjN

3x100nF Capacitor, 1x22nF Capacitor: https://s.click.aliexpress.com/e/_d8TSem7

2x470µF Capacitor, 1x2200µF Capacitor: https://s.click.aliexpress.com/e/_d7IrB2Bhttps://s.click.aliexpress.com/e/_dWrNxN9

1xBC637 NPN Transistor: https://s.click.aliexpress.com/e/_dVb5i6F

1xBC640 PNP Transistor: https://s.click.aliexpress.com/e/_dUX37mf

3x100k Resistor, 1x10k Resistor, 1x100 Resistor, 1x47 Resistor: https://s.click.aliexpress.com/e/_dSgNnQR

1xIC Socket:https://s.click.aliexpress.com/e/_dU34FV5

Step 4: Build Your Circuit!

Here you can find the schematic for the LM386 and the NE5534. You can also use the board design that I made. I used this as well and it works perfectly fine.

Step 5: Success!

You did it. Now you can enjoy the awesome music of your homemade audio amp .
Feel free to check out my Youtube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information.

https://twitter.com/GreatScottLab

https://www.facebook.com/greatscottlab

Comments

[mytoshibapc123]

Does the IC need any code?

[teknifix]

Hello! I built the NE5534 circuit. I couldn't get it to work, figured the opamp was bad and replaced it but no go. I replaced the 5534 with an LM358 (and changed the wiring to accomodate it) and it worked. I have been trying to test my 10 NE5534P chips and they all seem to be the same. Are they all bad, or am I just missing something?

[RichG20]

I heard you lose *some* audio quality through Bluetooth. Did you notice any loss?

[UtkarshVerma]

Want to change the name of this speaker? Check out my instructable:

https://www.instructables.com/id/Change-Bluetooth-HeadsetSpeakerAdapters-Name-or-Ot/

[Priyanshu Srivastav]

What is the maximum power output this ne5534 ic amp schematic????

[UtkarshVerma]

How I approached this problem:

https://www.instructables.com/id/BluFi-Portable-Bluetooth-Audio-Adapter/

[firehearted]

what are the specification of speakers

[ahmetfar]

Hey i really want to build this but i have a problem i need my speaker to be loud so i wonder is it loud sorry my english is not very good

[ahmetfar]

By the way i am going to use the lm5534 circuit

[jaswant9]

I made Lm386 circuit and it worked but has too much noise.. So I started making Ne5534 circuit but Can't get it to work.... I changed all the components. I think there is some problem in the output stage..

[Airborne.]

hi, i have made a bluetooth speaker but the problem is that i get distortions because it is connected to the same powersource. the speaker i made is supposed to be portable and it would be inpractible to use 2 different batteries. is there any way i coud solve this problem? thanks in advance

[yossef987]

I have got the same problem did you fix it

[Airborne.]

I bought a simple ground loop isolator and that fixed the problem.

[NightSpeed]

would something like this work http://www.ebay.com/itm/Mpow-Ground-Loop-Noise-Isolator-Car-Audio-System-Home-Stereo-With-3-5mm-Cable-/152095915411?hash=item23699f7d93:g:yEsAAOSwXSJXPVsY ?

[Airborne.]

I think it will work but I am not 100% sure, I used a similar ground loop isolator like this one from e-bay: http://tinyurl.com/jgnffk7

[yossef987]

Thanks

[yossef987]

Same problem

[FirD2]

where i can get the 12v power supply?

[AndrésB42]

Which is the program you used to make the layouts for the pcbs?

[ChethanY1]

can i use a 10 watt speaker plz replay me i am doing this experiment as my project