Here's my best guess at how to get a satisfying listening experience at low volumes, in roughly descending order of importance...
1. Protect your hearing.
2. Make the room dead quiet.
3. Make the system dead quiet.
4. Sit closer to the speakers.
5. Listen to small scale music.
6. Use EQ to compensate for psychoacoustic effects.
7. Select speakers with high efficiency.
8. Select an amp with low gain.
9. Select a preamp with low output impedance.
10. Select speakers with 1st or 2nd order crossovers.
Of course, all this is highly debatable.
Bryon
1. Protect your hearing.
2. Make the room dead quiet.
3. Make the system dead quiet.
4. Sit closer to the speakers.
5. Listen to small scale music.
6. Use EQ to compensate for psychoacoustic effects.
7. Select speakers with high efficiency.
8. Select an amp with low gain.
9. Select a preamp with low output impedance.
10. Select speakers with 1st or 2nd order crossovers.
Of course, all this is highly debatable.
Bryon