two cents
I've listened to music with blissful sound quality on very large speakers at low volumes. It's not about opening them up, or speaker size, but about your listening position relative to your speakers' positioning. At lower volumes, the listening position becomes more critical, specially with speakers endowed with a narrow and more focused sound stage.
This may be subjective, but I've also found that lower listening volumes require absolute silence in the environment, and a period of listening time for my hearing to adapt to the low noise and low volume environment. As if my sense of hearing had to "stop tunning out" sounds, like it does all day while it is being assaulted right and left, and start to "tune in" again to the subtle input of sound at low volumes.
Eventually, what at first, sounds like inaudible and weak volume, seems to become not only sufficient, but also quite full and well rounded, yielding a very nice listening experience.
Your mileage may vary, but give low volume a chance before making any rash decisions.
Just my two cents.