Yeah , some of the more expensive systems of old are still rocking out today . I heard an old Altec Lansing 4 . 1 system 9 id 278 pg 1 at a friends house in a hastily thrown together movie watching setup hooked up to a laptop some some year ago and I thought it sounded great . I remember the Logitech Z 5500 being very nice as well , with that big sub and cool control center . <| sep |> Have you seen how much prep has to go into setting up a stage ? It already takes long enough that most crowds are antsy and getting a little wild by the time the band comes out . Add 30 minutes to that to check whether the safety standards were met to every single concert in the world . How much wilder and more annoyed do you think those crowds are going to get , in that case ? It ' s easier to just add one tiny clause in the contract that can be easily checked if that one clause isn ' t met , it ' s likely others , like safety clauses , weren ' t either and it doesn ' t require 30 minutes of analyzing every inch of the stage while the crowd watches and waits .