Yes you can do that. On the Amp you should be able to dial in the specific frequency range(s) that you want boosted. Usually very bassy hip hop/rap songs will have a boosted lower end around the 80 to 150 hertz region. But be sure not to give to much power from the sub to the amp. And know its limits.
Hope i helped in any way.
Sent from my iPod touch using AG Free