The D112 often sounds pretty good on kick drums and can sound good on bass cabs, but for tracking bass, I prefer something more along the lines of an ATM25 up close, and a U47 or 87 or other nice LDC a foot or so back. I recently got to try an ATM25 and a Brauner VM1(ridonkulously amazing mic, but really really pricey) on a gorgeous old Ampeg 8x10 SVT setup, with a Countryman DI running simultaneously, and I've gotta say that I've never gotten a bass tone that gorgeous that worked so well in the mix with little extra processing. The D112 has never really sounded that special to me. I prefer my close bass amp mic to provide a nice even midrange and a good capturing of the high end click and attack, to mix with the clear consistency of the DI and low end punch and thud (and whatever entirely vague unimaginative adjective you can think of) of the LDC. On another note on the D112, I used to really love it on kicks, till I tried an older AKG D12(previous version of the D112, I believe) and realized how much i was missing in terms of full frequency response without any weird peaks.