I First Started Micing my Bass Drum Outside the Drum ,well Because My Bass Drum Didn"t have a Hole in it and I didn"t like the Sound as I couldn"t Get that Low Sustain "Thud" out of it Just a Ringing Boom sound which isn"t the sound I wanted for the Music I do so I ended up Cutting a Hole in My Bass Skin and Just Placeing my Mic on the Pillow Faceing the Drum Head and I get a Much Better sound Now especially since I use a Cheapo Apex $25 Mic for my Bass and I"m sure it will sound better once my Compressor and EQ Shows Up....
Cheers