Scoops are terribly obsolete. For HT subs they're at least an octave shy of how low they need to go. If run as full range music only bass bins they suffer from a major response dip in the midbass, where the front and rear waves meet 180 degrees out of phase. They can go pretty loud, but they don't sound all that good, which is why they long ago stopped making them. Plus you'd need something with them to cover above 800Hz.
Bill Fitzmaurice Loudspeaker Design
The Laws of Physics aren't swayed by opinion.