John talked me through using the volt meter by putting the positive lead on the positve speaker terminal lead and negative on the other. Then using the test CD he found my amp impedence on tracks 27 and 30. I do't even know how he figured it out. He did it pretty quickly. Either way, the amp has 75kohm impedence not 50k, which caused a dip switch change, and huge difference in my 5A's. thank you John.