On a similar note to what Steve Maestro was talking about-I last night did a 75 Kid Middle School Band Camp Dance(A second one tonight) with the Fender Passport P-250 on Stands and 2 Yamaha MS400's on the Floor..The Yamaha's are 400 Watt Per Channel 15 Inch Active Speakers that were discontinued..They weigh 53 Pounds as does the Fender Passport..Unlike Mackie SRM 450's,The Yamaha's Run Cool and seem to benefit form Processing Going In..The Adults present were complaining about the Bass and Volume ..If you are in my situation and 1. Can't Lift Much and 2. Operate in a Tough Economic Area..You find ways to work around everything such as What I just described..My FBT Active Speakers and the BOSE System are other weapons in my aresenal.