Greetings, my devoted fans!! As promised, I am showing you a speaker that I made for general use. It is an active, battery operated unit which is able to accept all three main types of input jacks from microphones, musical instruments or any transistorized equipment. Being of compact design, I use it mainly as a test-bed when repairing any of the aforementioned. Apart from the mid-range speaker seen on the front, it also has a tweeter on the left where you see the perforations pattern which I drilled by hand. Below that you can see the three input sockets and the toggle power switch. On top of the enclosure you have the output volume control. This unit can be hung on a wall, hence the triangular fitting at the back, or it can be placed on any surface as shown. The enclosure panels were cut from a tongue-and-groove floorboard and glued together except for the back panel which is detachable for battery replacement. In the next illustration I shall guide you through the complex circuitry inside. See you then.