Simple power amplifier 4x50 W

This simplest audio amplifier is capable of delivering 50 watts of power to each channel of four. In total, it turns out 200 watts of sound power. And this, as it turned out, is not the limit. The microcircuit on which the amplifier is built can give 80 W per channel for 2 Ohm load.
Nowadays, to build a powerful amplifier with your own hands is not difficult. And all this thanks to modern element base.
Today we will talk about a simple amplifier on a TDA7560 microcircuit, which can easily be made by a person with almost no knowledge of electronics.
It is worth TDA7560 Ali Express absolutely ridiculous money, about 1 dollar -look here.
Simple power amplifier 4x50 W

Philips' TDA7560 chip is just a find, especially for those who have not encountered it before. Her long-established love of both novice radio amateurs and motorists, for her low voltage supply. The TDA7560 has a full, but older analogue - TDA7388, slightly less powerful.

Amplifier characteristics


Output power:
  • At a load of 4 ohms maximum - 4 x 50 watts.
  • At a load of 4 ohms nominal - 4 x 45 watts.
  • At a load of 2 ohms maximum - 4 x 80 watts.
  • At a load of 2 ohms nominal - 4 x 75 watts.
  • Power supply from 8 to 18 volts.

The other characteristics are in the datasheet.

Amplifier circuit


Simple power amplifier 4x50 W

Circuit enable chips can always be seen in the datasheet. Everything is simple and obvious: there are four entrances on the left, four exits to the right on the right. Naturally the input can be closed between each other, but not the output. Each chip output must be loaded onto its own speaker system.
With this, I think, there will be no questions. The only thing that should be explained so is the output of "ST-BY" and "MUTE". "ST-BY" is a waiting mode, the usual one is immediately connected to the power plus and the amplifier is always active. «MUTE». is the mode of the switched off sound, the usual one is also connected with the power plus and the amplifier always becomes active. On the board for jumpers are worth.

Amplifier board


Simple power amplifier 4x50 W

Boards can be made ordinary LUT for several dozen mine. Download it here:
After soldering and assembling the amplifier, do not forget to install the IC on the radiator, preferably large if you are a music lover who loves loudness.
Simple power amplifier 4x50 W

Amplifier application


The chip was originally designed for use as a sound power amplifier in car receivers. Therefore, to use this amplifier in a car is an excellent choice. But keep in mind that it is desirable to use thick power wires. You may also need to significantly increase the capacity of the filtering power capacitors.
The amplifier on the chip is great for home use. You can feed it from the old computer power supply, as I did in my time. And to use a cooling radiator with a fan will significantly reduce its size.
I think there is nothing complicated here, but if someone doesn’t understand something, I’m waiting for your questions in the comments. Thanks to all!
Simple power amplifier 4x50 W

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