In college we had a conductor who really like deep, resonant bass drum sounds (think movie explosions). What are some ways to get more oomph out of a concert bass in a live setting?
You need to measure the primary frequency your drum puts out, convert that to a wavelength, then set your drums that distance or half that distance from a sound-reflective back wall. Probably somewhere in the neighborhood of 10-20 or 5-10 feet for the half distance. A fourth of that distance (which is unfortunately a more likely location) will actually create corresponding anti-noise, the opposite of what you are hoping for.
Lets say the primary frequency of your decay is 52hz or Ab. That gives us a wavelength of 6.555m or 21.5 feet. Setting your kick drum 10'9" away from the back wall will double your resonant volume, and provide some nice phasey reverb for the shorter and longer frequencies. Sit 5'5" from the wall, as drummers often do, and you're cancelling your own volume with the sound reflections.