Well not an expert here by any means, but the key to getting the backbone of the music, drums and bass nice and fat.
I am a drummer and LIVE sound tech.
First off, get the kick sounding fat by itself, if the heads are good, if not replace them. I like Aquarian for the snare and Eveans EC2's on the rest of the kit, I love em. Loosen up the heads to flex, almost to the point that the heads rinkle, both batter head and front, then tighten just a half turn. Now you should have a pretty fat kick by it's self. That the way I do mine.
And all systems are different, but you should be able to get pretty close with these settings.
You should be able to get a nice fat kick with just about any decsent kick mic with the following.
Place the mic just inside the front port, or place inside at an angle facing the batter head from the bottom, on a small pillow. I feed my mixer first setting the gain, just below the clip, then back down a hair more. Then insert into an eq first, then through the compressor. I usually turn on the low cut filter on the mixer, drop the top and bottom freq a notch or two. On the eq itself, start with settings flat, CUT on the EQ limit boost with an eq, most times it will only inject more noise.
With someone hitting the kick drum for you, hard, about one kick every two seconds is good. Listen, and drop off the top end down to about 10k to 8k, there is nothing up there you need. Then going down the graph.
Drop below 8k or 10k, most of the mids you can cut some, you may need some in the middle for thighness, drop off the 25k 30k at the bottom. You may need to boost your input gain at this point. Boost slightly in the 8-10k range to get your attack, boost again I stress (slightly)100-300hz to get bump. Watch your rumble frequencies, around 500hz. Start there, then using your compressor tweak it with some compression, adding gain when the level drops to low, and sometimes a gate is nessasary, to cut out the ring or sustain. Now with all that bump make sure your not slamming your mixer channel. But that should give you a good start point.
I run the bass guitare channel similar, only cutting the top end and leaving the mids about flat, watching when a song using a slap, or finger pluck, I boost the upper mids a little. As stated, I am a novice, but this works for me.. and most times the listeners really like the fat back lines. And of coarse, this is for music that needs a thick back line. Jazz or bluegrass would never need these settings, and a totaly different story.