I have ported Tempestas, which have the same cabinets and similar woofers to the ported Veritas, thus the same bottom end spec. My room is medium sized, and eats bass energy. They sound very well balanced, with good weight. With most music a sub is not needed, but for movies I've decided to go with a sub for the visceral impact. A room that loads the bass more solidly might not need a sub at all. So- it depends on how your room loads bass, and what you listen to. For most classical a sub is not needed, but it does help for the body sensation of pipe organ pedals.