I am in the process of building a new subwoofer for my stereo/cineam system. It iwll be using a JL 10W3 D4 driver, in a 18mm MDF enclosure of approx 300x300x490mm. It will be driven using an Arcam P75 power amp from the sub pre-out on my Denon AVR2800 receiver. I have already built a subwoofer based on the Adire Audio Tempest in a 500x500x900mm enclosure, but this is way too big to even consider taking to uni in October. The W3 will be in the 300x300 end of the enclosure, with a flush mahcined 30mm MDF baffle, facing upwards, with the opposing end having 2 layers of 18mm MDF to give strength. The base will also be bolted to a Linn Kelitk base, that weighs around 10-12kg, it's made of a granite composite, and comes with spikes that should ground it well. I will try and get some pics of it when I can. My scanner won't work with WinXP that I've got on now.