Although the newer very full sounding and allot more base I notice its very inconsistent, It doesn't always carry well on those small units and in some spots cant even hear it at all. Another issue I picked out is that do to the heavy drum beat when the units arrant in sync with the underliner at the least bit whether it's the system or an echoing and in some cases just an echo do to open spaces you will get a double drum beat and it sounds terrible. The original brighter sounds coming from the units carried allot better, the units had no drum beat since the underliner did most of the work causing the sound be much more consistent. I dont know everything but thats what I have noticed.