Nice bass
Nice bass amp (I prefer 10" drivers to 15" they sound alot more punchy to me)
Direct box, or XLR output from the pre of the amp
Decent mic infront of the amp (sm57 works fine but if you got better then go better)
Pretty much you got to start with good shit in order to end up with good shit.
I prefer that as well. 10'' speaker are way cooler to record than whoofy 15''.
I avoid to use the XLR output of an amp, i prefer a decent DI box. Amps-integrated DI's are usually noisy and not (very) usable for recording.
Am I the only one who can't stand the sound of a DI for fast music? It seems like the DI picks up too much of the bass strings slapping up against the fret board.
No, you are not the only one. i am with you ;-)
I of course track a DI, but i did not use that track in the mix most of the time. Often i use the DI o reamp with some dirty sounding destorting Amp simulation to blend with the (mostly clean) mic tracks.
But for one who realy wants to get a fat and deep bass with lots of low end - here you might need a good DI track.
Hint: Why not cutting everything above, say, 1000hz to get rid of that nasty string slapping (wich can sound realy cool when miced using a Hardtke rig or similar - but not via DI, IMHO)
But to answer the question of the topic started:
Nobody mentioned EQ!
You have to take care of the 150-200 hz area, here might be a conflict with the guitars... if you have too much energy here a bass will sound "boomy" and will sound dominant even when he is low in the mix. That means: You can't hear the bass, but he is still too loud. ;-)
That's your problem, when i understand that right.
Make shure not to overcompress the bass. Everyone tends to use too much compression (me too) here, you will end up with a similar problem like i described above. A multiband compressor can be a solution - do a search for andys C4 setting, now think about the "background" of that setting and apply that to a bass. You can tame the boomy frequencys while telling the attack and the string-slappings etc sparcle.
brandy