Klipschorns have better (deeper) bass response than the La Scala The midrange and tweeter horns are the same (Khorn, La Scala), basically The midrange and tweeter drivers are the same, basically The crossovers between the two are slightly different The drivers on some Cornwalls will work on the La Scala and the Khorns, but the midrange horn on the KHorn and La Scala are much larger than the Cornwall The K55 you refer to is the driver, not the horn.