i have a pair of these. i got them to replace a pair of Polk es-20s paired with a 'pair' of Polk PSW-10 subs. I'm not sure if its the '2.5 way' crossover method but the towers provide a more 'holographic' sound stage...something in the mids is more noticeable and complete but not muddy at all. i think the tweeters are the same in these and the es20s. as for the bass, the dual PSW-10s do provide a bit more foundational shake...but the ES60s are deep and perhaps the bass seems slightly better integrated, maybe quicker?? i may get a single sub for these later on but I am quite pleased with these...cabinets are attractive and seem robust.