Hey guys, I'm a new poster who needs some advice. I'm building a practice PA for vocals for my band, and I'd like to know if this is a good setup. Nady XA-900 Power Amp Behringer UB1222FX-PRO Mixer 2 Peavey PR15 speakers I bought another PA setup once, and it was almost the same price as this one but apparently some things were incompatable with one another and I managed to destroy the PA and the speakers. (The PA just gave out, and the crossovers burned out on the speakers). The Nady XA-900 gives out 400 Watts RMS per channel, and the PR 15's are 800W Peak (400 RMS), the PA is 8 ohms as are the speakers. I really just need to know if I got everything added up correctly so I don't manage to burn up another 500$ worth of equipment because things weren't compatable! I'm worried there might be a compatability issue I don't know about. I appreciate any advice any of you can give me!