[quote name='markstuk' timestamp='1486721681' post='3234045']
You'll get no argument from me on that.... I have a thumpinator
[/quote]
Interesting that the roll off is apparently at 30hz on the thumpinator - still lower than most bass cabs can reliably reproduce at any noticeable volume. It will get the fundamental of a B string through - which to be honest, is probably not wanted on most stages anyway. Keep the sub frequencies for the PA - and even then, a lot of smaller venues won't thank for you subs that low. In fact, you got to be running some pretty decent subs to get anywhere near 30hz at -3db at any decent SPL anyway.
The real chest thumping stuff is circa 65Hz - the resonant frequency of your rib cage... so you know where to peak your kick drum's eq...