I'm looking at these PA products for a co-worker and am a bit puzzled by their power ratings and the crowd coverage claims. http://www.anchoraudio.com/products.lasso For example, all the products up until the top model are rated at 50 watts. Even the one labeled for 2000 people! The top of the line then jumps up to 130 watts (and for a pretty penny I might add). Am I missing something because this is for voice amplification and therefore not as demanding? Is there an integrated product (combining amp, speaker and wireless mic reception) that would be better? I know this isn't home theater per se, but I appreciate any assistance.