I need help finding a new cab. I'm currently running a GK Backline 250 head and Backline 115 BLX 1x15 cab. I don't like the sound I'm getting from it. I don't have much money to spend, maybe $500. I need something that can keep up with a full 4 piece band. (2 guitars, vocals, drums) We play a sort of jazz rock alternative. I need something that I can practice with and take to gigs. I mainly play with a S101 bass. I don't really want to buy a new head. I think I just need a bigger cab. Although I've been playing for a few years, this is my first-time venturing into the amp world and I'm a little out of comfort zone here. So any tips help.Also, this is my first time posting in a forum, I'm sorry if I'm doing something wrong.