I'm running a 1999 bass 350 out of a Trace Elliot 8ohm cab. At 8ohms it puts out 220wats. I'm looking to add another cab on to it(2x10 or 1x15). I was wondering if i have to buy another 8 ohm cab or if it will work find with say a lower ohm cab. If i were to just get another 8ohm cab would it increese my sound or just sound fuller? What is the site that has the inexpensive but good cabs i think the Name started with an A(not ampeg)?