it just depends i like playin tool or alice in chains
but as far as hittin hard. rap
that bia bia song or however u spell it the one wit lil john w/ludacris. on ludacris's verse those 3 bass notes. will be heard far away.
"po pimp" by do or die has some good low frequencies if any of yall remember that song hehe.
i like the way "oxyconton" by lil whyte sounds too
a lot of bone thugs and harmony will pound too
"the foundation" by Xzibit is good
but if u gotta 10 you probly wanna go w/hard hittin kick drums. cus a 10 isnt gonna his some of those low frequencies