My understanding of balanced/unbalanced audio is alright, but not amazing. I have my electric piano (Yamaha DGX 640) connected to a mixer via a stereo audio jack, however the audio sounds really distant and quite echoey. When I pull out the jack about halfway, so that I can feel the tip is touching the connector inside, the sound is marginally better (with no echo), and then I also have no control over the pan/balance setting.
I believe this is a problem with unbalanced audio coming from my piano (from the 'phones/output' output), and then the mixer interpreting it as a balanced signal (thus destroying a good 1/3 of the signal due to the way balanced signals cancel each other out).
I'm confused as to why this setup isn't working anyway (seen as though the mixer inputs have 'bal or unbal' written on each one) and how I could fix it. I've read that I might need a TRS to 2x TS (so essentially stereo to 2x mono) cables, but that then renders my first four inputs on the mixer (with equalizers) useless because they only have single inputs. Another idea was to buy either a DI box or stereo to XLR cable - would any of these work?
Apologies for this being so long :)