“The punch component of most bass drums lies between about 80 and 100Hz. Below this area, you’ll mostly feel, rather than hear, any boost, and it’s easy to overdo. Warmer kick sounds major on the 200-300Hz region. When the kick needs to cut through on smaller speakers, then you might also consider a boost in the region of 2.5-6kHz, which will tend to emphasize the click of the beater.”
(from Sound on Sound)
If you want a dull sounding kick for mellow tracks, you can apply a lowpass filter to it to create a low thump with no high-end whatsoever. For trance and breakbeats, it’s good to add some high frequencies to the kick so it has a little bit of click to it. This will give the kick much more presence and make your track more danceable. You should apply two separate EQ curves to the kick to achieve this. One EQ curve should emphasize the low frequencies (which usually are just below the bass frequency range. you don’t want the kick and bass to reside in the same frequency because that will result in a muddy sound) The other EQ curve should be just above the bass frequency range. The combination of these two EQ curves will give you a “saddle” for the bass to sit in.