go to ebay, and get an old alpine 3553 or 3527S
any old 35XX Alpine are great underrated amps...
my 3527S (its a 4/3/2 channel amp) ran a pair of Boston Acoustic Pro Series 5.5's and a 10" Orion Cobalt (3 way)
the power is clean, and the amp is 10 years old, and still runs like a champ.
-vq