Owner/Builder: HJC Customs USA, The Cool Lute, C G O
Join Date: Aug 2005
Location: Southwest Michigan
Cabinets are boxes and are incapable of producing wattage. You may want to look into driver assemblies for the reciept of said wattage or look to amplification for the production of said wattage.
As for the lightweight box, check into foamcore plywood. This may help your cabinet weight issues.