Infinity Prelude P-FR

These loudspeakers have not only very good characteristics - flat on-axis response (as well as listening window average) and gently upward DI - but also very deep bass extension. Truly full-range.

Source: http://www.homecinema-fr.com/forum/materiel-haute-fidelite/jeu-des-4-enceintes-inconnues-t29979561-15.html