wow been a long day i forgot to search my bad guys
The HellBoy was described as such:No...not at all in my opinion.
I haven't seen anything to warrant then price they charge. They use technical terminology to make things sound "fancier" than they are.
Sounds like what most call a ported enclosure with a large port 90 degrees from the subs.high vent mass off-axis bass-reflex enclosure