there's a great chance there's phase cancellation involved , Bass frequencies are very sensitive to phasing issues.
So your dominant/fundamental bass frequency in this instance might be the one that your room actually cancels , try moving the speakers around , or another room, or take the bass track and listen to it with headphones and such just to be sure the bass is there and there's no problem before you play the track.
Another thing to consider when we talk about phase is the number of microphones or recording mediums used to track the bass(is it 1 mic + 1 DI box?).
If for some reason your bass track is a combined recording (2 mics in 1 track) it's possible you have phase issues and it's really hard to fix.
The most possible solution to the problem you have concerning phase issues once more is that your guitars or synths are canceling the bass, try adding 1 track after the other and see which one causes the trouble.
Try going away from the speakers, very low frequencies need actual space to develop and be heard in complete amplitude , give it 3meters away from the speaker and try to see if the bass is there.!
SPEAKER PHASE: your speaker cables might be in the wrong order and again phase canceling bass!
Remember flipping the phase will fix a cancelled phase issue. So if for example you have 2 tracks canceling each other, flip ones phase !