It doesn't sound lacking in bass here. I'd just bring the bass (the instrument, not an EQ band) up by 1 or 2 dB.
Rolling off the bass at 30 Hz should not affect the overall perception of "bass" in the mix. Remember, the frequencies that make bass cut through are not the low fundamental frequencies, but rather the harmonics above 300 Hz, sometimes as high as 1 KHz.
Try turning up the bass guitar a bit first; if that doesn't do it or you find you need too much boost to make it really stand out, then try an EQ boost. See what happens if you give it 3 dB around 900-1000 Hz. If that still doesn't cut it, try adding some distortion on the bass to add more harmonics.