MIDI to audio - low volume

Hi all,

When I record my MIDI sequence to audio, the output it very very low, not far from the bottom on the volume bar. I have a KORG m50 routed to my TASCAM US-1800 through both MIDI and audio cables. The audio track’s inputs are connected to the keyboard’s audio outputs (L/R for stereo). I’m using a patch directly from the keyboard. The volume adjustment on my keyboard does not help much. I tried fiddling with different knobs, but no luck. Please help! I have a sound engineering portfolio to compile, and this is stressing me out!