Aprianto, T., Nuryono, A., Setiawan, I., Kurnia, H. and Purba, H.H. 2022. Waste Analysis in the Speaker Box Assy Process to Reduce Lead Time in the Electronic Musical Instrument Industry. Quality Innovation Prosperity. 26, 3 (Nov. 2022), 53–65. DOI:https://doi.org/10.12776/qip.v26i3.1744.