This study presents the design of an affordable, low-cost electricity generator integrated with a cascade thermoacoustic engine. A commercially available loudspeaker, operated in reverse, functions as the electricity generator. The system is designed for compatibility with off-the-shelf components, ensuring cost-effectiveness. The cascade thermoacoustic engine, consisting of a standing-wave unit and a traveling-wave unit in a linear configuration, serves as the primary source of acoustic power, which is transmitted to the loudspeaker positioned downstream. Atmospheric air is used as the working gas. The results demonstrate that the system effectively converts acoustic energy into practical electrical power. The thermoacoustic generator achieves a maximum heat-to-electric efficiency of 8.62% at an optimal load resistance of 19.77 Ω, with a total heat input of 1046.74 W. These findings contribute to the advancement of energy-efficient technologies and support the transition toward renewable and sustainable energy solutions.