Hey everyone. So I recently picked up a pair of Stromberg AP-50 amplifiers, which have a bunch of different OT secondary taps: 0ohm - Black 8ohm - Yellow 25v - (Green or Orange?) 16ohm - (Green or Orange?) 32ohm - Black/Yellow 70v - Black/Red 100v - Black/White When I got the amp, the 16ohm solder terminal had nothing going to it, so it was disconnected at some point (also where the NFB is suppose to be) and the 25v tap had the NFB going to it. So I am trying to determine if someone moved the 16ohm tap and the NFB wire to the 25v point, or it was wired incorrectly and the 16ohm tap is indeed the one disconnected. The 2 color wires that I am unsure of are Green and Orange, so one is the 16ohm tap, and one is the 25v tap, but they are so close when measuring the resistance with a multimeter, that I dont know which is which. According to the sams manual, the 25v should be .4 ohms, and the 16ohm should be .43ohms. Is there another way I can determine which tap is which?