Biniam Seifu Debelo. 1 Bheema Lingaiah Thamineni. 2 Hanumesh Kumar Dasari. 3 Ahmed Ali Dawud2 1Department of Biomedical Engineering. https://www.roneverhart.com/Turbosound-TS-18SW700-8A-18-Low-Frequency-Loudspeaker-p31480/