My mic technique changes daily based on a combination of the mic, the kit, the desired sound, the PA, the room, my mood etc... I am the house guy at a theatre, I run a sound company, I work for another larger sound company, own a studio and privately contract with bands. Thats kind of what has to be done in my area for me to live the way I want and not have to have some sort of regular job.
Here is what I have noticed... The D112 has a more pronounced midrange, but is easy to EQ. The Sennheiser 602 has a huge low end and a nice snap, but the midrange gets covered easily. Also, the 602 often creates a low 50 hz'ish tone when placed directly in the port of a kick drum and run with a big enough drum fill. It's almost like a low frequency but it isn't. Its a solid tone that does not get louder or quieter but only happens when the mic is in the port of a kick drum head. It may be some sort of proximity effect. Add a agte though and this can be really cool. It really adds a lot of "bump". The beta 52 seems kind of vanilla. The ows are there, the highs are there, the mids are ok, but it never really sounds very exciting until you add a lttle EQ and make a cut or two. The D6 has a good low end, tight mids, but the highs get really harsh really easily. The D6 also seems to not take low frequency EQ as well.
As far as micing goes, I prefer to run a 2 mic setup for that rock sound or be resolved that it could take some serious EQ'ing to get what you want out of 1 mic. Live I stick either
a shure beta91 or a Sennheiser 901 on the inside of the kick, and whichever other mic I am using (I actually prefer the Sennheiser, but have not tried the newere dual element AT yet or the newer Sennheiser 901) in the port. For jazz or drummers that have no port, I often mic from the batter side of the drum. Eq wise, I like to add a little in the extremem lows around 50 or 60, scoop out a nice big chunk at around 600, and then make a smooth little boost at 3k and again at about 8 or even 10k depending on the quality of the setup (live or studio). Many people talk about not EQ'ing much, but if you really want that big rock kick sound don't be afraid to push the EQ fairly hard (assuming you are using a decent EQ). Try pushing the lows up a little more than you think, really cutting the mids, and pushing the 8k up quite a bit if you have a dense bass and guitar mix. If your mix has room, I would probably reccomend a lot less total EQ. It really depends on what the mix demands and how your tracks are comingout.
