Currently playing through a Hartke 410XL, and now I'm getting the jones for a 5-string. Anyone getting a good sound wth a 4x10 and a 5-string, or am I going to have to add a 15 or 18? I run direct into the PA, so I don't need to fill up the room with my rig. I just don't want farty sounds at mid power levels because of speaker limitations. Thanks!