It's a monster - winter blues sub box
The monster is replacing a lame little Q-logic sealed box with a old RF 10" sub.
Needless to say, there is no comparison. Boom... boom... BOOM! Happy to say there's not even the slightest hint of a rattle, and the damn thing pounds beyond my needs even with a modest ~200 watts going to it. I have a 500 watt Memphis monoblock on the way ($85, thank you eBay...) but now I'm not so sure it is really necessary.
Now... onto building a better solution up for the z...
Humble from the front:

Get's serious from the back:

Been 10 years since I've tried woodwork:

Finished product:


