andrew.grimm3
New Member
I need to design a 2.1 ch amp using the LM1877. I understand how to get my values for the left and right channels but I am required to use a summing amp to interface both the left and right channels to the inputs of the summing amp and then construct a low pass filter on the output of the summing amp to then therotically drive a subwoofer that is designed to respond to lower frequency's. No filtering is required on the output of the left and right channels.