Oh man! Homework! Looks like I get out the Electrical Engineers Dictionary, Electronics for Dummy's, to figure out what "Almarg" is talking about, and then apply those principles. What a foolish thought, to think this would be easy. Al's the kind of guy I would make a point of setting next to in the College Cafeteria, but not say a word in cross talk. I'm coming from "I just love driving the car, I don't know how to work on it" frame of mind. But now I know what to say to the marketing guy without being B.S.'d big time. Thanks Al, wished you lived close though. Please keep the input coming Audiogoner's, and thanks everyone for the advise and support.