Hi everyone, I have another dumb question about my Ampeg cab. I have an Ampeg SVT410HLF, and I love it. However, on the back there is a knob which under it says: "Level Control." Now this may sound like a really dumb question, but what exactly is that knob used for? I wouldn't want it turned too far to a certain side and possibly mess up my cab. Any help? Once again sorry for the dumb question, I'm still relatively new when it comes to electronics...
