40w 12v Audio Amplifier Circuit. Lm383 power otl 5 5w. Input and output grounds must be properly decoupled for optimum performance.
The pcb tracks through which there is high current flow should be made broader. When constructing the circuit the power amplifier tda2040 need to be connected with the heatsink properly. Amplifier wattage 12 5 2 4 amplifier wattage 39 06 40w approximately things to remember while constructing 40w amplifier.
However it is dc coupled to the next stages and its bias point can be adjusted from the r8 trimmer.
Small ic circuits for speaker. The circuit will have two ls4440 amplifiers ics and will be able to drive two 20w speakers 20w 20w with volume bass and treble control. The circuit must be assembled on good quality pcb. Larger heatsink provides a better result.
