The ability to listen to music and movies without having to change the amount of bass.

None

Well, I have been using these speakers for a good 6 months now and I have pretty much fine tuned them as best I can. The problem was that every time I tuned them they just kept getting better and better! The bass is better them almost all the external subwoofers I have heard and it has the ability to shake you or pound you in your seat.

By far these are the best speakers I have heard in a long time. I will be purchasing the centre channel to match and then save my money to get another pair for rears. Hopefully by that time I will be able to purchase the new models and put these to the rears.

Can't wait!