I wasn't paying attention when I made my purchase. I bought a 300 Watt/4 Ohm amplifier and a 400 Watt/4 Ohm speaker cabinet. The problem is that I intended to add another cabinet to round out the sound. I've read that there are ways to rewire a 4 Ohm cabinet to increase the impedance to 8 Ohms and thereby permit me to get a 2nd, 8 Ohm cabinet. Is this just a bad idea or is it practical? Are there any devices that sit between an amp and a cabinet and allow for impedance "balancing" for lack of a better word? Also. Though my amp says 4 Ohms, the User Manual states that the "minimum impedance is 2 Ohms." I don't want to damage my amp, but if the 2 Ohms is the minimum, could I just add a 2nd 4 Ohm cabinet to the setup without causing any damage/problems?