I may be wrong, but I don't think humidity will have that much of an effect. A couple of things do come to mind, though. The first thing I would check is your speaker cables. If you biwire, maybe one or both of the cables going to the high frequencies became disconnected somehow. Also, check them to make sure they are wired in phase.
Another thing it could be is warm up. Its different for each piece, but some components need a very long time to warm up. Several days in some cases.
You may also want to check your IC's. Its possible that you may have broken a connector when you were moving stuff around.
Another thing it could be is warm up. Its different for each piece, but some components need a very long time to warm up. Several days in some cases.
You may also want to check your IC's. Its possible that you may have broken a connector when you were moving stuff around.