How to Build a Speaker Circuit with Adjustable Volume How to Build a Speaker Circuit with Adjustable Volume. This is a building on the last project which we constructed a speaker and connected it to a 3 jack for it to work and play out sounds from a computer, cd player, or any standard audio device with a speaker jack. How to add a volume control to your audio amplifier Click to view on Bing9:28Many amp kits and DIY projects would benefit by having a volume control. How A Potentiometer Works & Options for Wiring - Duration: 11:04. Add volume for Stereo audio Amplifier (useAuthor: JohnAudioTechViews: 154K Stereo Volume pot wiring issue | Electronics Forum I am attempting to add a volume pot in line for some remote speakers. I have a 100K Dual-Ganged Stereo Volume Control Model: 271-1732 from Radio Shack. I understand that the center lug is the wiper and outpit should go there and that the other two lugs are for the input and a ground. However.. DS1802 Stereo Digital Volume Control – Circuit Wiring Diagrams DS1802 is a Stereo Digital Volume Control IC. It consists of two 65-position, 45kΩ digital potentiometers with logarithmic resistance properties incrementing 1dB per step. It can be operated under automatic software control via a serial 3-wire interface where wiper settings are written with 8-bit words, or under push button control with simple contact closure. Stereo Amplifier Circuit Diagram - Engineering Projects Stereo input is given to analog IN jack which is connected to +IN pin of IC 1 and IC 2 (TDA7052) through RC Network as shown in circuit diagram. Variable resistor is used to control the volume where capacitor C 5 and C 6 is used to block the DC components if available in audio signal.