Hi! I've tried with new TRS cables but the problem remained: the noise channel is too loud than the others, the wave channel has a too low volume and the two pulse channels suddenly come up or down during the song. But when I listen with my headphones connected to the gameboy all works well. I used new TRS cables connected to unbalanced mixer input, as you suggested, and I connected my headphones to the output. Maybe I have to use the Main Mix Output of the mixer (that is unbalanced) and connect the speakers to it, instead of listen with my headphones? I really don't know what could be the problem.. 
1 Sep 2, 2015 10:06 am
Re: Problems between Gameboy and Mixer (with LSDj) (8 replies, posted in Nintendo Handhelds)
2 Sep 1, 2015 7:55 pm
Re: Problems between Gameboy and Mixer (with LSDj) (8 replies, posted in Nintendo Handhelds)
What cable you think I should try?
3 Sep 1, 2015 7:46 pm
Re: Problems between Gameboy and Mixer (with LSDj) (8 replies, posted in Nintendo Handhelds)
Ok. I'll try unbalanced cables. Thank you very much 
4 Sep 1, 2015 7:22 pm
Re: Problems between Gameboy and Mixer (with LSDj) (8 replies, posted in Nintendo Handhelds)
Oh, ok! But balanced cables does support stereo signals? 'Cause I use a lot of pan-potting with LSDj. I read that unbalanced cables are only mono. Is this right?
5 Sep 1, 2015 6:10 pm
Topic: Problems between Gameboy and Mixer (with LSDj) (8 replies, posted in Nintendo Handhelds)
Hi everybody! I have a problem when I connect my GB Classic (with LSDj) to any Mixer or External Sound Card, because there is a lot of noise and also the sound suddenly looses gain, some channels are more louder than others, or suddenly the gain become too loud. I don't know what is the problem, because when I use my Gameboy only with headphones connected to it, all works well. I use balanced stereo cables, so it's not a problem caused by my cables, and also my mixer hasn't got any problem.
Hope that someone could help me, thanks