Dynaudio C1 with more impact

I've just auditioned a pair of Dynaudio C1 hooked up to a Cary SLI 80 and I really liked the speakers, and I was actually very surprised by the Cary since it's a pretty low watt amp which seems to go against the suggestions of many around here. I listened to mostly older rock (Beatles, Pink Floyd, Queen, Zeppelin) and I thought they were amazing for this kind of stuff. There was a lot of detail, and every instrument was very well separated. The only "issue" I ran into was when playing metal, which even that sounded really good. The only thing I wish it had was more "impact", for lack of a better word. All the music was there in front of me, and every instrument was clearly audible and while this is good for most times, there are times when I'd actually like to feel the music hit me, if that makes sense. I realize that they're pretty small speakers and the bass on them while extended and went pretty low, it was refined rather than having any impact.

Am I looking at the completely wrong speaker for this? Don't get me wrong I still liked them very much as they were, but I'm wondering if the issue that I'm seeing has to do with the power provided (is a high watt amp really needed for that sort of this, or is that simply for more volume?), room setup, or does it just need a sub in some instances.