0.5 ft³ (14.2 L) ~45 Hz @ 8" ~45 Hz @ 12" — Compact 8" sub, studio monitor 0.75 ft³ (21.2 L) ~38 Hz @ 10" ~40 Hz @ 14" — Compact 10" sub 1.0 ft³ (28.3 L) ~35 Hz @ 12" ~35 Hz @ 16" ~35 Hz @ 26" Car 10" ...