Had one of these from a prior project. Using 1/2" MDF Made a box 7 x 14 x 13 (.5417 cu ft) w/ a Precision 2" Flared Port kit cut-down to 10" total assembled length (Tune is about 36-37 Hz) firing out the side. Before closing the box... I put rubber Self-Adhesive Roof-flashing (avail at HDepot, Lowes) on all sides except (top-firing) baffle, be sure to use a roller to push-out any and all air pockets. Staple 1 layer of High-Loft Quilt Batting on all sides except baffle (avail at JOANN's Fabrics). On baffle I also glued some 1" x 6" strips in the middle of the open spaces to either side of the centered woofer cutout hole on the baffle to add rigidity. You'll need 6 Bar Clamps, and at least 2 90 degree clamps. I just used Tite Bond II Wood Glue. The only screws are to mount the sub, and on the Banana plugs Terminal plate I put on. In my ofc room I was underwhelmed and at low-to-mid 20Hz's I could hear a bit of port noise running off a 50 Wattt plate amp. But OH MAN when I put it in her XTERRA using 140 Watts Bridged at 4 Ohms... DAYUM!! I shocked the heck outta myself. The output was almost on par with the Infinity Ref 860W in 1.02 cu ft I had in their before she wanted a smaller setup. This lil booger really impressed me even more in this particular setup. The specs JL gives for the .25 cu ft slot-ported box suck because it has WAY too much port noise with those specs.