5-600 Watts for a front stage??!!?? THATS a bit overkill.

Make SURE to get realistic ratings on the amps.

Also, I would not suggest a ported enclosure. By design, they have a "hump" at a certain frequency...for realistic sound, you will not necessarily want a "hump" in the sound curve... Sealed would probably be the best way to go.

Front stage amplifiers you might want to look at 50-100 watts. For the sub, probalby 250-300 watts. More power is better, but it costs more. "Head room" is a great thing to have. Ever notice how some songs have quite passages, as well as very loud ones. With enough power, the syste will reproduce this effect with much more detail/accuracy.

Personally, I have 150 watts on my mid/tweeters, 150 watts on the midbass, and 600 for a single 10" woofer. I HAVE to put up the audiophile "Flag" here and let you know, not all amplifier watts are created equally.

John