Originally Posted by qguy
I was informed that 95 percent of movie content is 30hz and above and very few would actually contain below 30hz, if chest thumping / tactile response is the target, the PA 460 mated to my box size would be perfect, is this correct ?
I don't know who stated that misinformation, but likely someone who has never heard a suitably capable home theater that will extend below 30Hz, and/or was attempting to justify their personal selection of a subwoofer that does not extend that low. Most, if not all, movies these days have decent extension to 20Hz. Many of them, mostly action, thriller, and horror movies extend into the low teens with authority and even sometimes into the single digits.
If you build a sub with a tune around 30Hz, you'd need a high pass at or around tuning, leaving ~28Hz and below on the table. Will you be happy with it? Possibly, in fact, probably, if you have never heard a system that extends into the teens. Just don't go listening to anyone's system that has extension to at least 20Hz. It will ruin you and you will be back here looking for ways to decrease your box tuning. Then you will have opened the rabbit hole, and it's a downward spiral from there! Once you taste 20Hz, then you start looking for ways to get to 10Hz, then 5Hz, and so on and so forth.
Don't say you weren't warned!