Still not sure what this means. Lower tuning means smoother bottom. Large ports with the same depth = higher tuning. Higher tuning usually means more bottom with a more rapid rolloff, and can often mean more upper bass if the tuning is too high (for a boomier sound).
Regarding the TecAmp s212:
All I know is that the newer model is the same size (same box) with massive rear ports (at least triple the port area of the original) versus the small front triangle port of the original. It sounds very different... much, much more deep bass response, and WAY more polite in the upper mids. They could have made a driver change, which wouldn't surprise me. The only reason I describe the two cabs by the port design is that is the only way you can visually tell them apart... otherwise, they look identical, and since you can't even see the little triangle port in the front of the cab due to the dense, dark grill, the only way to tell the current from the old design is to look in the back of the cab.
The main reason I brought it up at all is that all my Tecamp clips on Youtube are made with the older cab design, and should not be used as a meaningful example of tone if considering the current s212, which again sounds smoother, deeper, and more polite all around. The 212 combo cab, which is also identical in size and look to the s212, is different yet again, since it has the 'rear port' design, and a mid driver versus the tweeter and switchable crossover design of the stand-alone s212. Whew!!
I haven't tried the s212 in all Ken's clips... but Ken's experience with the rear ported s212 (series 2) would be a close representation of the tone of the combo I have. IME, compared to the s212 in kens clips... the (higher?) tuning of the new s212 sounds way deeper in the lows and is much more polite through the upper mids as Ken says. The puma combo is even more smooth and polite up top than the new s212's, due to the mid-high paper cone driver design.
and now... back OT!