i am probably going to buy two gk mbx-112 bass cabs and use my swr st-220 as the head. My question is can these cabs generate enough low-end? I play classic rock in a cover band so i dont require a ton of low-end but enough to be adequate. i am strongly thinking of going with this rig as its extremely portable (i dont drive). I can just use one cab for rehearsals with a weight of 25.5LBS (cab is 12, head is 13.5). its loud enough @220 watts (usually will di anyway), and its not too bad in terms of price. Additionally, if one part dies I can replace it. Thanks for your opinions!