anyone ever heard fusion subs before?

 

I use Fusion quite a bit. The powerplant subs have a very solid bass, and handle a ton of power. They only come in dual 4 ohm, so you have to be careful with your amp choices. The 10s actually have a bit better low frequency extension than the 12s, if you're using ported enclosures....They can go flat to 30hz in a fairly small box.
Very nice subs for heavy metal....they're flavoured somewhere between Kicker and JL tonally.

The gasket on the front of the sub is huge...over an inch I think....which can be a pain if clearance is an issue.

The cone area is a bit small with the huge surround, but they have a decent excursion.

Overall, nice subs, decent pricing.....good value if they fit your install.

 

And green!