Re: Dirty/Gritty sound help
Run some basic saw wave patches through a distortion plugin(izotope Trash 2 is my weapon of choice), the presets are usually good enough to give you a great start. Also your DAW should probably come with some sort of built-in guitar and/or bass amp plugin you can run things through. If you layer the same sound panned differently and with different parts EQ'd out in each layer, it will sound huge and dirty. Try to keep the low-end stuff in the middle, generally, and the higher end versions of the sound panned left and right.