Very well made box
Crutchfield Customer Review (What's this?)
I transferred my JL Audio WxV2 10" sealed subwoofer to my wife's Toyota Sienna from a Mazda5 and although it was plenty loud in the Mazda it was woefully inadequate in the larger van. Tried a custom 1 cu ft ported box tuned to 37 hz with that subwoofer and it was much louder but the frequency response wasn't flat at all. Next I tried this SO box, which is larger than recommended by JL but it really brought out the lower octaves and the frequency response is much flatter. Very happy with the sound quality from this box. I did also try stuffing the box a little with some poly fill but that didn't work out so well (reduced output) so it sounds best un-stuffed.
Pros: Nice looking and built box with internal bracing and a good 35 hz tune.
Cons: Plan to swap out the terminal cut with Item #120TCRB if you want to use a double banana plug like I did.