If I am correct the wizzy is rated at 103db spl while the schroeder 1212 is 102db. I cant afford a new amp AND a new cab. I think I am going to go the two 112 cab approach. I am hopeful that two 12s run at 2 ohms / 300w should be enough for a medium sized venue. It would be a modular rig so it would be easier in terms of transportability when i only need 112.