This isn't just for Tom, but I've asked about it before and nobody seemed to have heard of it. The driver is a Ground Zero Nuclear. It was originally designed for HT use and very much resembled a Bob Carver Sunfire with the wide rolled surround (in fact, at one point Carver was filing a law suit against Ground Zero, but I don't know if it ever went through). Anyways, they ended up being introduced to the car audio market and were a pretty big success considering their lousy marketing. They were popular because they were able to achieve phenomenal SPLs in low tuned sealed boxes (supposedly a single 15 could reach into the 140s in a sealed chamber, although the only official result I ever personally saw on paper was a 15 in a vented chamber that reached 145.1) Anyways, there were a few HT nuts on a car audio board I used to visit and they were always trying to convert people from using these subs in their cars to their homes. Supposedly, they were capable of really high output in the sub 20hz range and had high quality bass to boot. I never really paid much attention to any of that though because I wasn't interested in HT at the time, but I see that some people are using the Audiomobile Mass drivers quite a bit and as far as the car audio community is concerned, the GZ Nuke is a superior sub, at least in terms of performance in automobiles. Just curious, because I've looked at charts for the audiomobiles and they look great and GZs didn't use to run that much more than the Mass series. Although, I fear that GZ may have switched hands in my year of absence from car audio. I notice that the prices are a lot higher than they used to be. Anyways, enough babbling. I'm just curious to see if anyone has heard these performing in a home. *EDIT* GZ went out of business a little while ago, which would explain why their prices have skyrocketed.