Hello everybody I just recently bought a Gallien-Krueger 410BLX Cab and a 40RB IV head. This is my first real rig aside from practice amps and I do not wanna blow the speakers when I slap so I wanna get a limiter pedal but I really know nothing about them! I dont know what any of the different knobs mean so when I do get my limiter I wont know what to put my settings on. Pleez Help KNOBS.........1)Level 2)Enhance 3)Ratio 4)Thshd ......wat do these mean what should I put them at when slaping???