You might try the Classic Audio Reproductions if you have the budget: 97db 1 watt/1 meter, 16 ohms, 20Hz-45KHz and the 20Hz is bona-fide. I have found very little to complain about in this speaker: the resolution (with the field coil drivers) equal to the best ESLs, imaging and delicacy to match. OTOH they are the size of small refrigerators, but they work great even if only 6" from the rear wall.
If you are on more of a budget, the ZU Druid (the new version) is not bad; I found that while the Audiokinesis was not *rated* the same efficiency, that it *behaved* as if it was just as efficient, but with greater bass impact and more definition.
If you are on more of a budget, the ZU Druid (the new version) is not bad; I found that while the Audiokinesis was not *rated* the same efficiency, that it *behaved* as if it was just as efficient, but with greater bass impact and more definition.