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Hello, thanks for visiting our YouTube channel ELECTRONICS SANCHEZ TUTORIALS in this video we will show you how to make a toroidal transformer with voltage from 43volt GND 43volt to 55volt GND 55volt to use in amplifiers with power from 300w RMS x2 ch to 1200w RMS just modify the primary winding to lower or raise the voltage in the secondary if you like the video do not forget to give me a LIKE and subscribe share thanks for your support