Several things will affect the sound quality: position in the room of the speakers, seating position relative to the location of the speakers, room size, etc, etc.
Some people have tried to 'loosen up' their new RF-7s by playing some music pretty loudly on a loop all day long while they were away. Go ahead and try that. It certainly won't hurt anything and it might help them a bit. Something with a full spectrum of bass-midrange-treble.