No, if you record them together, then you are recording them as ONE WAVE FILE, right? In this case, you cannot adjust the volume of just one.

If you record them separately (as 2 wave files), then ofcourse you can adjust each one's volume separately, however, you can't really use both in the same Arranger. The best solution is to adjust the volume of both BEFORE recording as ONE wave file!

Thanks,

AJ