edrowland Posted September 15, 2015 Share Posted September 15, 2015 Is the TRS line out on a Spider IV TRS balanced, or TRS stereo? Doesn't seem to say anywhere. And WHY can't you use a non-TRS cable?? Seems kinds strange. Supplementary question: if it's TRS stero, I have a 200W PA speaker with TRS balanced input. What would happen if I just run a TRS cable from the Spider IV to the PA speaker? Quote Link to comment Share on other sites More sharing options...
fflbrgst Posted September 15, 2015 Share Posted September 15, 2015 It is stereo. If you use a TS-TS cable, then you will only get one half the signal. If you are not running any of the stereo FX, then the left and right channel are the same, so you won't miss any part of the sound, but the output signal's volume will be lower overall (I've tried it). If you run a TRS cable to a balanced input no harm will come, but you will still only get one side of the stereo signal and will not be providing a balance signal to the PA speaker. Quote Link to comment Share on other sites More sharing options...
edrowland Posted September 15, 2015 Author Share Posted September 15, 2015 So why the heavy handed warning to ONLY use a TRS cable on the line out? Quote Link to comment Share on other sites More sharing options...
psarkissian Posted September 15, 2015 Share Posted September 15, 2015 Noise floor. Ground loops are possible,... depending on what else is in the signal path and how it's plugged in, Quote Link to comment Share on other sites More sharing options...
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