My current set up is an Ampeg pf 500 through two 2x10 he's. I use a jazz bass most of the time. I've been jamming with one guitarist and drummer, both pretty loud. I just can't seem to get a growly tone to cut through in the mix. It just sounds kinda boomy and dare I say muddy. I like my set up at lower volumes but when it gets loud I don't dig my tone. I have been looking at the GK mb500 and a gk 4x10. I don't know if they are a step in the right direction of my tonal desires, can anyone help?