ozorn Posted October 3, 2016 Share Posted October 3, 2016 hi there, i just got a spider IV 15. i am using the CD/mp3 input to jam - using the phones output with headfones. But the signal from my mp3 player coming though the headfones output is only mono. Mp3 player is connected via stereo 3,5 mm and headfone are connected via 14" stereo. why is there only a mono signal coming though?why ist there no stereo? it doesn make sense to provide a "music line in" if it`s not stereo. And why ist there a stereo line out, if there is no stereo signal? Quote Link to comment Share on other sites More sharing options...
fflbrgst Posted October 3, 2016 Share Posted October 3, 2016 Because the stereo input signal is 'summed' to mono in the input circuit. Stereo line-out is used so that you get a signal in both left and right headphone speakers without using a mono-stereo adapter. Quote Link to comment Share on other sites More sharing options...
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