My dad has had an Adcom system since the early 90s. I've lusted after it since he got it and the other day he asked if I wanted it (I of course immediately said yes).\n\nHe gave me a:\n\nGFP-555\nGFA-545\nGFA-535\n\nAm I correct that the 545 and 535 are both amps, and only one is necessary? I have no idea why he had two of them and neither does he. He was not an audio enthusiast but wanted a nice system at some point and isn't familiar with the connections.\n\nWhen I brought the system home I was foolish enough to disconnect everything and now I can't get it to produce sound. My dad said he used it within the last five years or so.\n\nI am attaching two photos - one showing the rear of the system, and one showing the front.\n\nFrom the Video\/Aux port, I have an RCA cable connected to the headphone jack of a laptop. The laptop has "Stereo Speakers" as the output type. I also tried connecting it to my phone to no luck.\n\nThe Main Out of the 555 (lab port) is connected to the Input of the 545. I only have one speaker connected in the photos for testing purposes. (the cheap speaker cable is just temporary for testing). I also tried the "norm" port as well to no luck.\n\nI also tried plugging in some headphones into the headphone port but I still didn't hear anything.\n\nAny idea what I'm doing wrong (if anything)?\n\nAlso, if I can get it to work, how can I connect a subwoofer to this system?\n\nMy local repair shops charge $125 just to look at something, so I am trying to avoid that.\n\nI have not yet tried the 535 and the 555 because I don't have thick enough speaker wire to use the terminals on the amp.\n\nIn in Fairfax, VA if anyone local can look at it in person.