Introduction: Amplfier 2.1 TDA 2050

About: someone who likes electronics

In the previous article I made a tone control for the 2.1 amplifier. An additional amplifeir board is needed so that the tone controls can be used. For some people it might be very inconvenient if they have to install many modules in one device. therefore, this time I will make amplifier 2.1 where in this module is equipped with Tone controls and amplifiers in one PCB board.

For the amplifier I use 3 IC TDA2050. Two ICs for satellite and one IC for subwoofer. This IC has a power capability of up to 35W true RMS.

In the tone control section, for the satellite I use a passive HPF. Its components consist of capacitors and resistors only and no op-amp components. As for the subwoofer, I use active LPF. The components consist of resistors, capacitors and the LM358 op-amp IC.

IC TDA2050 is quite popular for amplifier hobbyist, so I decided to use it. Watch this article to find out the manufacturing process.

For the record, the amplifier that I share in this article is still not working properly, if you still see this article it means there is no update update of this amplifier. If this article has been crossed out, it means that I have updated the amplifier and the amplifier is working normally

Step 1: Components Needed

Still the same as the previous project, the majority of the components I use are SMD components because it saves the PCB size.

Here is a list of the components used for this amplifier:


IC :

Dioda :

  • 1* LED Green

Kapasitor :

  • 1* 100n
  • 2* 10u
  • 1* 1u
  • 2* 2n2
  • 1* 470n
  • 1* 47n
  • 2* 4n7
  • 2* 68n
  • 2* 6n8

Resistor :

  • 1* 0R
  • 2* 100R
  • 2* 100k
  • 4* 10k
  • 2* 15k
  • 2* 1k
  • 1* 220k
  • 11* 22k
  • 2* 27k
  • 1* 39k
  • 3* 470R
  • 5* 4k7


IC :

Dioda :

  • 1* zener 12V


  • 4* 100n
  • 3* 470n
  • 4* 22u/35V
  • 8* 470uF/35V

Resistor :

  • 1* 1k5
  • 3* 2R2
  • 1* 470R
  • 1* 10k Stereo potensiometer
  • 2* 50k Stereo potensiometer


  • 4* Terminal block 2P
  • 1* Jack 3,5mm
  • 4* sapcer
  • 1* heatshink

Step 2: Schematics and Layouts

For now I can only share layout files in the form of images. In the future, I will update the schematic in PDF form

Step 3: Making PCB

to maximize the module that I created. Of course the PCB must be of good quality and look attractive. for that I ordered PCB from PCBWay, because By making PCB on PCBway you can get High Quality 10 PCs PCBs for only $ 5 & new member First order Free: the time needed to produce the PCB is also quite fast

The results are good and in accordance with the design I sent. The materials used are of good quality so they are not easily damaged. To make a PCB on PCBWay, You can visit website and upload your PCB file there.

gerber files are needed to make / print PCBs at the factory, so I provide the gerber files for those of you who want to print them too.

Step 4: Assembly Step

Time to install all the components. for the installation of smd components, I still manually use a soldering iron so it takes a long time to work. In the future, I will try to use steam solder to install SMD components to make it faster.

Step 5: Result

As I said at the beginning, this amplifier still doesn't work properly and you can see the results for that in the video part 1 above.

I will make video part 2 with the results of this amplifier board working normally, so wait for an update from me for that, thank you.