I have a trick that I pull from time to time when working with drum loops/breaks especially at faster tempos that you could describe as "multiband envelope shaping".
WARNING: While this works for short drum loops, it will get very tedious.
DISCLAIMER: While this works for electronic music, it will likely sound like ass (or unnatural) with other genres that depend on drums sounding like real acoustic drums
Ok, with those two out of the way...
1. Take a drumloop, drum track and chop it up into individual hits. Using a dedicated software such as ReCycle for this will make your life much easier, although, you will still need to tweak the results to make sure you grab all the hits.
2. Put that chopped up mess onto (in your case) two tracks.
3. Using a
linear phase EQ, cut off the bottom from track 1. Solo the track, and sweep the LowCut filter up until you get the bottom end of the kick out.
4. Using a
linear phase EQ, ideally the same make/model as track 1, take out all the highs and mids on track 2. The cutoff frequency for this HiCut filter might be the same as the LowCut on track 1, but it might actually be a bit higher then that, depending on the EQ at hand. What I normally do to get the ideal cutoff frequency for this filter is have another copy of the drum track w/o any treatment on it, then Mute/Solo between the untreated track and the tracks with EQ on them and adjust the EQ frequency on the 2nd track until there is very little or no difference between the two.
5. Adjust the envelope of each slice on the "bass" track to take away boomyness.
As to how you adjust the envelope on each slice will depend on the DAW you are using. In Cubase, you can adjust fade-in and fade-out of each audio part very easily.
So, like I said, this will be OK for short 4-8 bar drum loop, but will be tedious if you are dealing with a 5 minute track
Of course this "multiband" treatment opens up other interesting possibilities where you can treat each frequency band in a different way, but for the purposes of this discussion, I'll stop here.