Honestly, I think the Iridium subs are among the best I've heard. I own a Critical Mass UL12, Esotar 1200, Morel Ultimo 12", JBL W10GTI MkII's, and also the DLS Iridium's. In that list, I would rank them as second best, behind the Esotar, which costs nearly 3x the amount.

They are extremely crisp, have an awesome punch, and a sweet natural sound due to the cone material. I could see why they win so many awards. They also handle pretty good power while having a pretty shallow mounting depth.

I do like them a lot. If I had to find a flaw, it would be on lower bass notes. The subs have great extension, definately. They can play well down to 20hz, but a combination of a low xmax and natural cone really makes the low notes have "flutter". Atleast to my ears they did. A lot of it will have to do with enclosure design. Other subs which have a larger xmax, will blend the lower notes to give a "smoother" appearance, whereas with the DLS you hear every "flutter" of a slow 20hz sine wave. So, in reality, it may not be a flaw at all. It just really reveals the music in a way you are unused to.

It definately outperforms the Morel and JBL though. It has superior tonality, and will hit every note in the spectrum from 100hz down to 20hz, with an upper smoothness and crisp punch you won't really find in other subs.