Thank you for your suggestions! This sheds good light on considerations for me. It also brings up other related questions I have about what may be occurring.
Part of the sound difference is twofold:
1) I'm hearing frequencies with the Tannoys that I'm not hearing with the living room B&Ws.
2) I'm hearing crispness of sounds with the Tannoys that I'm not hearing with the living room B&Ws.
But, these same sound differences are also true comparing the Tannoys to the B&W sounds in the Volvo. Which suggests that possibly part of the difference I'm hearing is between Tannoy and B&W speakers. Do Tannoys and B&Ws have their own tonal "personalities?" If so, what are they?
The thing that makes this even more confusing to me is the fact that the Tannoys are technically near field studio monitors - which suggests that they should be "neutral" in sound. But in this situation, it is the B&W speakers that sound more "neutral" than the Tannoys.
Does anyone have any opinions on whether another Dirac treatment could be of help? Thanks!