My speakers stated rating for power handling is 20w - 150w; except for my center speaker which is rated 20w - 120w. The speakers are all 8 ohm. I am thinking of purchasing an amp which delivers 5 x 200w of power at 8 ohms. I'm a newbie so I wonder: Is this too much amp for my speakers? Is there a substantial risk that I will blow my speakers because my amp will be too powerful? Thanks.