Report JBL 2269H 18" Differential Drive Discussion in Bass Gear Posted November 20, 2020 Have any of you tried the 2269H in sealed enclosures? I have three JBL 5628 subs (ported@25h with dual 2269H) but in my upcoming theater I'm trying to save some space in the room and was considering using the drivers in a shallow and sealed type of enclosure. (Google Procella P18 - a clone basically). I know I will give up output below ~40-50hz, but given that I have six drivers and almost unlimited power for them, could this work? Room is ~3000 cu.feet.