Reply to Make a buildup then drop a big bassline?

Hey guys, I wan't to make a sloow buildup in a track, and then at the right time I wan't to make a big drop with just bass, and out from there should my next song come in. Do I need a sample for that? I've tried to find songs that have an explosion or anything simular, but I havn't had any luck.

Best regards Jack H.