I don't believe that they suck at all. There is a member on ssa.com that has 4 of the sdc2.5 12's wired up to an American Bass 400.1 in a Ford Escape doing over a 150 on music. That is pretty loud with a driver that costs under $150 in a daily tuned setup that iirc peaks around 39-40hz. Hope that helps you a little bit. If it were me I'd try them out since they aren't going to set you back a ton of money. If they were much more expensive I'd probably say that it may not be worth it but I think you will find that it is a solid buy.
Originally posted by RUSik:
I already was frightened that SD subs is suck