I'm working on a special project trying to turn an used subwoofer driver into something that at least physically resembles my EP500.

I have a CNC router and access to the black veneer, so making the actual speaker cabinet won't be difficult. Plus I can buy an extra grill to put on the front of it from Axiom. But I'm looking for an less expensive option for a sub amp and I came across these:

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=300-752
and
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=300-806

I'm just assuming that Axiom wouldn't sell a EP500 amp for much less than $750.00. And these are soo cheap.

Anybody ever heard a review of this stuff?

I'm worried that I might totally ruin the great sound of my Axiom Epic 80 500 7.1 system by paring it up with some sort of low quality amp. So if it does that, I'll probably just use the "fake axiom" subwoofer in the garage or something.