What Is MPX Filter?

- Jul 27, 2018-

MPX filter refers to a switch that is added to some tuners and recording stands. Used to turn on the 19 kHz filter to filter out the 19 kHz pilot tone when the station is playing an FM (frequency modulated) signal. When recording with the recording dock, the MPX filter is even more useless, because the pilot tone will interfere with the normal operation of the Dolby noise reduction system.



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