I have a DIY cab with a calculated F3 of about 100 Hz. The midrange hump is minimal. So far I am quite happy with the sound, but it leaves me curious as to what people think is a reasonable range of F3 values for bass cabs. Mine is a sealed box. I ask before I build a smaller cab with roughly the same response curve. Am I in good company at all, or is such a high tuning out of the ordinary?