Reply to volume faders

I've had the S4 for a while now, and I've searched this a couple times and havent found anything.

I've noticed that the volume fader for the track only really works for the top 1/4. normally on a analogue style mixer, as soon as you press it up, you should start hearing it the track, normally i dont hear the next track come in till its more than halfway up on the s4. thoughts? I've calibrated many times.

thanks