I have a 12" shiva, and an RCM-Akustik Detonation 110 MK II (190 W RMS I believe). Right now it is housed in a 24" ID, ported sonosub of approximately 36" height. For a number of aesthetic/renovation reasons, and changes in the way we use our system, I'd like to downsize to a compact, musical sub using these parts. I can keep the sonosub frame in case I change my mind later. Is building a small-volume sealed cube sub as straightforward as it seems or are there some interesting (but not too challenging) wood projects out there that can create good results? I'm not looking for bone-shaking < 20 Hz response. I probably will skip on a passive radiator design as I'd like to keep this project short and avoid buying too many extra parts. I've found some DIY sealed system guides at the following link: * http://www.diysubwoofers.org/sld/ Thoughts welcomed on any preferred designs you folks have uncovered.