I'm using a two speaker PA system as speakers for my PC. Some instruments from songs don't play through them, I only get the overdub or a very faint background version. Is this because my PA system isn't formatted properly to pick up different pans? (Such as when an instrument is meant to only play through cetain speakers). Is it likely I'm going to need to buy a compleatly different speaker system to remedy this? It does depend on where the sound is coming from, songs from spotify often don't play as they should but when I play them off YouTube they sound fine.