Stereo Audio Amplifier with one TDA2005 2 x 6 Watt
With one single TDA2005 you can build your own stereo ampliefier, which I placed in a slot of my PC case.
![](http://elektronikbasteln.pl7.de/images/volker/tda2005/tda2500.jpg)
TDA2005 from an old care radio made in 1993.
Top view of the pin connections diagram for the TDA2005
![](http://elektronikbasteln.pl7.de/images/volker/tda2005/tda2005stereoschaltung.jpg)
TDA2005 as stereo amplifier. R3 and R5 has 3.3 Ohm. The supply voltage Vs is about 14 Volts.
This is the way I built up the stereo amplifier in the ugly contstuction style.
It is a homemade construction. However it works very good thanks to the good grounding surface.
How to avoid unwanted oscillation: It is very important, that the input terminals of the TDA2005 are connected to resistors, which have 10 kOhms or less. With open input terminals the TDA2005 become a shortwave oscillator. In practice you use a 10 kOhm potentiometer connected to the input terminal of the TDA2005.
First run of my amplifier on my workbench. No distortion, no hum and no noise.
![](http://elektronikbasteln.pl7.de/images/volker/tda2005/poti.jpg)
The output level of a soundcard can be to high. A 56 kOhm resistor reduces the voltage to a normal level.
![](http://elektronikbasteln.pl7.de/images/volker/tda2005/1.jpg)
The circuit board is placed on piece of plywood.
![](http://elektronikbasteln.pl7.de/images/volker/tda2005/2.jpg)
It fits into a pc case.
![](http://elektronikbasteln.pl7.de/images/volker/tda2005/3.jpg)
Front view of my amplifier in my PC.
![](http://elektronikbasteln.pl7.de/images/volker/tda2005/4.jpg)
Inside my PC,
![](http://elektronikbasteln.pl7.de/images/volker/tda2005/5.jpg)
Th back of my PC with the two plugs for the loudspeakers.