The Empire doesn't dig super deep either. It is lower than the Cadence, but not by a lot. Empire gets a little below 20Hz, the CSX-12 does not get to 20Hz. Neither of those Cadence subs are intended to go super low, but they are clean all the way to what they can reach, within their limits. As mentioned earlier in this thread, the 12 was good at 25Hz and was trailing off around 22Hz, so it does have enough extension for most movies.