i cant open this rn bc of bad chromebook so i'll offer what crit i can without seeing under the hood.
the sub seems kinda loud, it should only be used to fill in the lower frequencies, like 120hz or lower, not to make the stack seem phatter. the accompanying bass does that, you generally want a mild hipass on it (around 200hz) and possibly a lowpass at 10k to take out any grit. a quiet flat saw an octave or two lower than the rest (bandpassed) would also help to fill in low mids.