Speaker Mixer Crossover Source Equalizer Amplifier Block Diagram. Place mixer in an appropriate position for operation. The power supply and audio power amplifier circuits are shown in figs 3 and 4 respectively.

Connect all stereo input sources as indicated in the diagram. Place mixer in an appropriate position for operation. Which works very well and found in almost all vintage amplifiers.

The power supply and audio power amplifier circuits are shown in figs 3 and 4 respectively.

1 shows the block diagram of the audio mixing system along with the audio power amplifier while the circuit of the audio mixer along with a tone controller is shown in fig. This is because they have very high input impedance and therefore draw less current from the source making them ideal. Operational amplifier circuitry generates the crossovers between tweeter and midrange midrange and woofer and equalization for the 3 way open baffle loudspeaker. The power supply and audio power amplifier circuits are shown in figs 3 and 4 respectively.