I'm searching for a device that could sum two signals together. Those signals are the outputs from the active crossover, high and low frequencies signals. I'd like to mix them together again after filtered. The purpose is because I still want the full-range signal but just want to adjust the levels of low and high frequencies independently. For example, the crossover point is set at 85Hz, above and below 85Hz will be independently adjusted levels.
1) What does the device that do this task called? a mixer, multiplexer, etc.?
2) Is it the same thing as the "stereo to mono audio converter"?
1) What does the device that do this task called? a mixer, multiplexer, etc.?
2) Is it the same thing as the "stereo to mono audio converter"?
