You know Marc, I have two of the AV123 Rocket Onix 10" subs. They're very nice looking Rosewood veneer, Gloss Black top and bottoms, Nice aluminum drivers, but the plate amps were crap, and both have failed. Parts Express makes a drop in replacement...
http://www.parts-express.com/dayton-audio-spa250-250-watt-subwoofer-plate-amplifier--300-803
You can have them for free if you want them. So for the cost of two of the plate amps you'd have some pretty decent subs.
Sealed, no ports.