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- Jul 30, 2006
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I recently bought a Profet 5.1 and ND 411 (8 ohm), and then I started reading on this fourm that it's bad to do this. Also, I was hoping to buy a 15 incher. What should I do? Do I need to trade in my 8 ohm for a 4 ohm, and can I add on a 1 X 15 without screwing anything up?

