I have extensively demo'ed the JL Audio D108 sealed sub and it is extremely tight and musical. The 8" driver is fast and agile with no bloat or boom. Covers the upper sub-bass quite well, better than larger diameter subwoofers. Depending on room size (1) would be fine, (2) better.
You sacrifice some of the deepest frequency theatrics but gain some upper bass punch and integration- sounds exactly like your goals.
You sacrifice some of the deepest frequency theatrics but gain some upper bass punch and integration- sounds exactly like your goals.