Alright, I'm currently looking for a sub either 10 or 12, I can power with 270watts at 4 ohms. It needs to be in a small box, so I'm thinking sealed, which is sort of why I'm asking this question. Will I be able to fill up a relatively big room, 25-30 by 15 with a sub this small? I'm not talking making it hard to breathe, but just so everywhere in the room you can atleast hear a decent amount of bass. I really don't want this thing over a cube, 1.5 cubes max. I figure if I cornerload it that should also help the volume quite a bit. Anyway I'm considering any sub under about 150. If there is enough support behind the AV12 I could muscle up the extra money. I'm thinking shiva, titanic mkII 10, few other cheaper dayton drivers. Any other opinions? I am quite experienced in car audio, so I can design the enclosure and all, I'm simply looking for advice from people that know how a sub will act in a house rather than a moving piece of aluminum Thanks Guys. PS. Finals are killing me, I meant to write 30% Movies 70% Music, Thanks.