Older L7's I used or played with were not bad at all in larger sealed boxes. Not to mention, they were the driver for Crazy8's in SPL. But Sean is correct in that with more back ground and info, the forum can provide a more educated answer based upon that. Sure, I would love it if you bought one of our Icon's, I always have a soft spot for people who own an Icon because the Icon is what we made our brand name on. It's a very lovable sub woofer as it can do a great deal of things well, is pretty forgiving and can sound quite good. Now, is it the best choice for sheer uncompromising SPL? No, but yikes they can get loud to the ear, the 10" version is one of the better daily listening 10" sub woofers available. But, if our Icon is not what fits your needs, then that was a waste of money.