First off, I wish to thank this board and its' members. Thanks to the input, I've been able to build a very nice system for a very reasonable price.
Today I went to get everything installed and I got some very unexpected news. My mono amp that was supposed to power my Alpine Type R swr-1043D was blown! It wasn't good news, but it was on old amp and I've had for a while, so I figured that it's time had come.
So, I'm back for more advice...
Here are the specs on the sub
Alpine SWR-1043D Type-R 10" subwoofer with dual 4-ohm voice coils at Crutchfield.com
I've searched this forum for relevant threads, but didn't have much luck. I've also been looking for for quality amps that push 600+rms @ 4ohms, but the ones that I've found have been very pricey.