I don't think hooking up an ohmmeter to speakers is necessarily a valid test. If you look at impedence graphs, speakers vary by frequency. You're likely testing a single frequency with an ohmmeter, so you may be missing something there. Trying out some of our advice would probably be more help to you than simply saying that the amp works fine or it doesn't, over and over again.

I'm not sure why you're stuck on Adcoms; there are plenty of other manufacturers out there, but that's a whole 'nother discussion.

I am the Doctor, and THIS... is my SPOON!