i'm not much for online discussion boards these days so i am not likely to join hddaudio the discussion at your link looks vigorous which is good i might use some of the ideas from the discussion in the article about powered speakers me i have more than thirty years in pro audio event production primarily audio system design and mixing i worked at mccune to which is why i altered that bit about the mccune jm active system since about the majority of loudspeakers i encounter in my career are self powered it has been a giant shift one that the article does not adequately describe i think meyer has had a very large influence he basically owned the live sound market in self powered speakers from to and catalyzed a bunch of other companies to produce competing models regarding active loudspeakers for high end home use i have no experience i hope i have represented that market accurately regarding your username it is now apparent that your name is the same as your organization such naming practice is not allowed on wikipedia according to the guideline at wp corpname you will want to change your name to something else by following the directions found at wikipedia changing username sorry for the inconvenience