At the moment I have a Peavey 410TX 8ohm cab and my amp is only putting out 150 watts@8ohms. With this combination my amp is clips sometimes when it's cranked and it sounds muddy and a bit distorted. Even with my low B, it lacks that deep low end growl. So if I add an 8ohm 15" cab my impedance will become 4ohms and I will get more wattage. My questions are, how will that wattage be distributed to each cab, 50/50? Also, will adding a 15" cab give me that deep low end growl I am looking for?