# Channels 1 & 3 not playing through PA
**URL:** https://community.enginedj.com/t/channels-1-3-not-playing-through-pa/5147
**Category:** Controllers
**Tags:** mcx8000
**Created:** [August 7, 2017, 5:38am UTC](https://community.enginedj.com/t/channels-1-3-not-playing-through-pa/5147 "2017-08-07T05:38:26Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@djfishprod](https://community.enginedj.com/u/djfishprod)
#### Post date: [August 7, 2017, 5:38am UTC](https://community.enginedj.com/t/channels-1-3-not-playing-through-pa/5147/1 "2017-08-07T05:38:26Z")
The other night at my gig. Channels 1 & 3 on my mcx 8000 would not play through the pa, I was able to hear them in the headphones and get a level reader. Soon as brought the x fader the left side, nothing. I was able to use channels 2 & 4, putting channel 4 on the left side, so I could have a smooth transition… more or less . Anyone know what could of caused this? Thank you for your help.
Mac Mini Serato
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### Author:  [@Gee\_DenonDJ](https://community.enginedj.com/u/Gee_DenonDJ)
#### Post date: [August 7, 2017, 8:33am UTC](https://community.enginedj.com/t/channels-1-3-not-playing-through-pa/5147/2 "2017-08-07T08:33:23Z")
If you put the crossfader in the middle of its travel, can you hear all the channels?
If yes, check the crossfader assignment switches for channels 1 and 3.
If using all 4 channels on the MCX8000 through some DJ software, rather than in standalone mode, then its worth selecting a different midi map/audio mapping on the DJ software for a few seconds, and then re-loading the original audio mapping - if still no luck on this route, then download the audio/midi map from the web, and try that - it could be that the audio map/midi map has become glitched within the DJ software/laptop.