Electrical Engineering Department

Degree Name

BS in Electrical Engineering




Bridget Benson


The Dual Channel Matrix Switch Audio Receiver controls 2 separate audio output channels. Each channel plays any of the system's 3 inputs. This controller enables a user to play two separate audio signals through two separate speaker channels. The system design allows audio input from 2 RCA sources or 1 RCA source and a phono source. The system outputs an audio signal for each output simultaneously at up to 36W on each channel for an 8Ω load. The device allows a user to control the audio input and the volume of each output channel. An Arduino Uno R3 microcontroller interfaced with front rotary potentiometers and a display creates this capability. The device operates using standard 120V, 60Hz AC power and outputs audio signals ranging from 20Hz to 20kHz.