First off Howdy, and if this is in the wrong place i apologise. I need help getting the most out of the....well subpar driver and amp i have. A little background on My project and what were trying to accomplish. Im setting up a HT system out of pieces myself and one roommate have. Out of this is going to come two questions. I currently have a 5.1 system from KLH with an 8" 120 watt sealed sub, and 5 2.5 drivers with tweeters in each. Myhead unit is a pioneer vsx-d711. He has a pair of crates that were givin to him that originaly had a 12",what i beleive is a six, and a 2x4" horn type tweater. One of the Vegas blew, and he got a pair of pyle drivers(im not shure what they are......not real high end im afraid) that should be here soon to replace them. I have the other 12" vega in my room(we were told they were cerwn vegas.....we found similar on ebay claiming to be as well so i assume they are)and i want to use it as a sub(pull the 120 plate aqmp off my 8 inch). We also have a pair of small shelf speakers with 2 6" sony's and a tweater we were considering using for rear channel satelites. So heres the first question. I want to build a box for this 12" i have here, but i dont know were to start on desinging a box. Size is not realy relative(not like were using alot of room in our living room anyway), and i want it to sound good. I was thinking maybe a large sealed box, but im not shure? My other question is this. The crates we have are one chamber with two ports in them. Would it be better to seal the sections and the ports off from each other, or should we leave it with one chamber?