Quad amplifier 40W

Quad amplifier 40W
This circuit provides a total of four speakers 4 ohms and 40W at 12v powered. It is therefore ideal for use in the car. Total harmonic distortion is rather high, about 10% at full power. But with half the power requirements (20W) is less than 2%. Anyway it is not intended to have a high performance system in the car. (more…)