Use the above methods to get the bass right and you will be surprised at the improvement in those "details".
Oh wait, sorry, other bass discussion. Use the below methods.
room modes, which are what we hear as lumpy boomy etc bass. But the solution to room modes is multiple subs. Once you understand this and change from the old-school two locations mentality to a DBA suddenly a huge amount of "room problems" goes away.
The next biggest source of "room problems" is the room being made to vibrate by speakers physically coupled to it. This creates resonances and ringing that ruins a lot more than just the bass. When floors, walls and ceilings are all being made to vibrate by physically coupled speakers it smears and colors all up and down the audio band.
The solution to this "room problem" is to decouple the speakers by putting them on springs. This is impressively effective, as has been demonstrated many times.
If the goal is improved bass response then both of these should be done first, long before any of the other suggestions. DBA and isolation are whole orders of magnitude better than anything else you can do. The improvement you will hear from doing these goes does indeed greatly improve bass response, but also goes far beyond that one thing.
DBA, Townshend Podiums and Pods, huge improvement in detail resolution and bass control.
This by the way will also reveal why it is not so much "a" frequency band, but whatever band has the worst most colored resonance. DBA and isolation greatly reduces these revealing a huge amount of hidden character.
