My friend was out looking in one of the used gear music shops in my town, and he said he came across a vintage Ampeg cab for 250, and that he wanted to split the cost with me. We both tend to share all the same equipment since we're both bassists, we're in a few of the same bands, and we work together on a fair amount of musical endeavours, so we both knew it'd be beneficial to both of us, and he said he would repay me. I talked over the legal matters with my dad since he's very savvy with that sort of thing, but that's beside the point. My friend showed me this vintage ampeg cab which cost 250 dollars, and what I was looking at was an Ampeg 8x10. It sounds kind of sketchy to me, because I imagine any sort of vintage cab in good working condition would cost more than current retail price, which as most of you know runs about 1,000 dollars. I'm going in later today with him to try out the cab, but I want to know what sort of things I should look for to determine if the purchase is going to be worth it. I've heard with these old cabs that there can be some wear and tear that you can't really see, and I want to know what sort of things I should listen for. Also, if it's possible, how can I determine if one or more of the speakers isn't working without taking the cab apart? Thanks in advance.