i have a large lopo 1x12 (sealed cab) that sounded really thin and boxy no matter what. i used a mesa c90, a vintage 30, and an eminence swamp thangs. it farted at nearly high volumes even with the swamp thangs being rated at 150 watts.
i started looking into porting the cab so i searched online. i have never done this or had any experience playing ported cabs. i did a little googling and got the info (port size, internal volume, etc) and proceeded to port my lopo.
all i can say is 'holy crap!' it does work. i'm really happy with it. it's like a whole different cab and it could actually hang in there with my mesa oversized 412. the best speaker in there out of all three i tried is the high powered eminence. i did a side by side comparison and the ported lopo can dish out nearly as much tight and punchy bottom end as the mesa 412. it only started to fart slightly (doing palm mutes) with the channel volumes at noon and the master at noon (LOUD!). this is a 112 i'm talking about.
bottom line, if i were to get a 112, i would get a ported or semi open back cab with high power speaker in it like an eminence or the EV.