I do mine with my Electribe Emx1. It has a nice sine wave, and when you drop down a few octaves, you get that low rumble hip hop bass noise. They also have an 808 bass patch on there, but I prefer the regular sine wave more. Most speakers don't have the ability to produce the low bass rumble since more of it is felt than heard, and alot of what you are hearing is more of the room making noise as it rumbles, and less the actual bass noise. Small speakers would need a sub to produce this.