This circuit controls the passage of the signal from one speaker to another. The potentiometers must be of wire 50 to 100 ohms with dissipation according to the power of the sound system.
The circuit shown in the figure serves as a pre-amplifier with a voltage gain of around 12 times,...
The amplifier shown can either excite a speaker in this low power version, or its input step can...
This circuit was found in a 1989 publication. The operational amplifier supports equivalents. The...