I love the Universal Audio gear! I will look into the piece mentioned here. I'm very familiar with the LA-2A....but that's another story.
I'm not such a big fan of the D112 and the Audix. Don't get me wrong, they are great mic's for a modern bass drum tone....but my ears always lead me the other way.
Speaking of AKG microphones. Has anyone used the original AKG D12? IMO, it's a superior bass drum microphone....hard to find....but good.
it should be noted that when in doubt, I will stick a good ole' SM57 on the BD. And man it really confuses everyone that I do that....especially since I have "no hole" on my vintage kits.
The best answer i use when people ask why don't I have a port hole on the BD resonant head,... Hey man, I don't have a hole cut in any other head with a mic shoved in it?!!!