7 . 1 . 5 Ele Shaman <| sep |> It ' s common knowledge among handymen that working on electrical outlets above ground is far safer than when you are on the ground and have a path for electricity to pass through you and to the ground . I understand his confusion . <| sep |> Excellent news ! Apparently I wasn ' t really able to help you much at all . That ' s ok . Arch is all about learning how your system works . I ' m still really not sure what those errors were all about though . Curious . Best of luck in your future Arch endeavors . edit in the future if you need to attach more images in a comment reply , you ' d just upload them to imgur as you did before and paste the links into your comment <| sep |> The impedance of a speaker doesn ' t matter as long as your amp can supply the necessary current to put out its rated power into that load . However , speaker sensitivity matters a lot , but you have to look up the specific model of speaker to find that out .