is the bass double tracked (so two different performances) or did you use the same take, one with distortion and one with the di?
Double tracked bass is going to sound pretty untight, use the same take, copy it and then apply the different fx on it.
Besides that, you could group both of the tracks, put an eq on them and compress them together, I sometimes even use a bit
of saturation on this part, too.
I am actually able to hear the bass pretty well even on my laptop speakers, the main problem is, guitars are covering it a bit and
imho it doesn't sound very tight.