hi everyone im presently using the 15ohm version of the rogers ls3/5a powered by the naim nap 140 and preamp nac 72. just wondering what will I experience if I were to purchase the ab1. will there be a night and day difference as far as bass is concerned? is it true that the ab1 will handle all sound frequencies from 120hz and below and the ls3/5 will only handle sounds above 120hz. the present owner is asking us$950 for the pair. thank you everyone.