has anyone tried the re sx 12''?

yes guys, has anyone tried the RE SX 12" in 1.75ft^3 tuned at 33-34Hz? how will it sound on the lows, and the SPL? how you compare it against it in a 2.0ft^3 box tuned at 35hz will the 2.0ft^3 @35Hz play lower and louder than it in the 1.75ft^3 @ 33-34Hz Box, even that the smaller box is tuned lower? On RE sites they recommend 1.5ft^3 @35Hz and 2.0ft^3 @ 33Hz why is this? isn't the bigger box better for the lows, so why tune it so low? Isn't it better to tune the 1.5ft^3 @ 33Hz to get the lows of it compare it at 35Hz and the 2.0ft^3 @ 35Hz compare it at 33Hz? this part I don't understand, I've always thought that a bigger box is better for the lows and the smaller box better for the upper Bass(SPL) so that's why I've always thought a bigger box is better to tune it higher compare to a smaller box, can anyone explain me this? And is 34hz tune a good daily freq for rap/ rock and every kind of music and SPL, will it play low enough, louder and punchy Bass? Thanks.Shaking The Neighborhood