After posting and reading a bunch of things on impedance, I feel that I am now an expert!!!!! ok, maybe not. But, here's my idea. Please offer insite and thoughts. I have a really nice Peavey 1 x 15, 4 ohm (500w?) cabinet. I actually would love not to eff with it. BUT, I need a 1 x 15, 8 ohm cabinet and, not that it's a money thing, but really, how many cabinets is one person going to keep hanging around? What I'm thinking is to have a dual 1/4" input on the back of the cab where one input goes direct to the speaker (4 ohm) and the other input interrupted with a 4 ohm resister in series to make an 8 ohm. Is the heat disipation, along with the cost of a 500w 4 ohm resister worth it? Or,should I just bore ahead and either buy a 400w-500W, 8 ohm(my amp puts out 450W to 2 8ohms or 1, 4 ohm) speaker and replace the 4 ohm speaker in the Peavey cabinet or, just find another 8 ohm cabinet on ebay/craigslist? Just trying to do the most with a little. Thanks for telling me your thoughts.