I picked up a pair of these speakers for $70. They are in unknown and untested conditions. I hope I took the smart risk but maybe it is a total mistake. Anyway, I won’t be able to test them until a couple of months later, but when I can connect them up for a listen, what should I be watching for or paying attention to? I am prepared for the worst case scenario, but in that case, any suggestions as to what to do with them other than throwing them away? I understand that the spare parts are hard to find. Thank you for all your help in advance.