Jim, are you referring to the fact that the 1400 and 2400 have a wide choice of crossover frequencies between the speakers and sub, varying from 40Hz to 200Hz? The older Yamahas have a fixed 90Hz crossover, which is close to the most commonly suggested 80Hz. Someone using very small satellite speakers(e.g. Bose cubes)might have to use a crossover of 150Hz or higher because of their lack of bass response. Someone on the other hand using much larger speakers might(mistakenly in my view)want to set the crossover even lower than 80Hz for fear of "wasting" some of the bass that their speakers were capable of.


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Enjoy the music, not the equipment.