renting out a ampeg SVT4-Pro to test it out see if i like it. Althought im having problems getting it loud without limiting. The amp is 1600 wats at 4 ohms. my amp is a Mesa/Boogie Road ready (15", 12", 2x8") its a 400 wat cab and can either recieve a mono signal at 4ohms or 2 seprate inputs at 8ohms. am i not hookinh this up right? has anyone used one of these? its a powerful amp but its not getting very loud before limiting.