I am going shopping for my first bass head and cab. I bought the head today, it was a GK backline 600, and and am now looking for a good cab. I just found a place I could get a Sunn 215BH for 100 bucks. My question is, when I go and test, play, and look over a cabinet what should I be looking for to make sure it is all ok? Juggling Arcs PS: anything I should know about this cab before hand?