Well...after finally getting a rig loud enough that sounds good. I decide it's a good idea to lend my rig (Referb. Acoustic B410, Ampeg B2RE) to my friends who's in my band (but also plays bass for another band). I haven't know the guy for that long....maybe a month a or two, but he seems like a trustworthy guy. So I told him the maximum limit to put the amp on, how to set it up and everything, and let him borrow it, and he's off. Sadly, I forgot to give him the correct power cable to the amp head, but did not realize it. I'm guessing he used a random one, which is bad? (Correct me if i'm wrong). He goes to the show and plays with the volume at about....5' o clock (about 2 "hours" higher than I told him), and the gain on 9 'clock (5 "hours" higher than I told him):scowl:. One thing I also forgot is that he plays with a low B. So about a week ago we go to practice (first time using rig again), and I turn it on (with the correct power cable), and the first thing I notice, even with a low volume, is this farting/creaking/crackling/booming/terrible sound coming from the amp. I have no idea what's wrong, the cab or the amp head. Could anybody tell me what the problem is? Cab or Head? EDIT: This guy is my friend, I'm not really mad at him considering he said he'd pay for it. I just want to know what you think is broken, I have my own morals and thoughts on loaning gear, I don't need yours. No disrespect to anybody.