First post here! I ran into a few old Peavey FC412 cabs for super cheap. They are incredibly sturdy cabs built into road cases. However, when the front cover is removed, nothing stands between the speakers and the outside world. Is it worth installing some sort of grill to protect the speakers when using? I'm somewhat worried about something flying into them and ripping them. Also, any information on these cabs would be appreciated. I could never really get a definite answer from searching online about the ohmage of these cabs, or the individual Scorpion speakers (I believe they are the 4 ohm version and not the 8, but I don't know enough about wiring to look inside and determine the total load. Nothing is written on the back of the cab).