Setting gains with amp and outboard soundcard
I'm looking for a method to set the gains on my m-audio USB MobilePre soundcard and Alpine MRV-F450 amplifier. I would love to find something like JL Audio's gain tutorial that basically spells out what voltage to shoot for at the amp's speaker outputs. Can't find anything like this for Alpine though...and the extra component in the MobilePre soundcard adds a level of complexity.
I'm not using a headunit...rather I'm controlling everything including volume from FrodoPlayer on my touchscreen. Any help would be appreciated!