thank you very much, after I have adding a LPad on Fostex drivers (more than 100db) the result is better. And I have added a little bit of "gaze" (in french) in vents. I have raise up the front of loudspeaker a little and give a slope/tilt to front baffle. Basses are more present and good. I think it will be better with active filter but at this time I'have not filter and second amplifier. This loudspeakers are made for the room where I work, and in this room I have only one amplifier. Others tube amplifiers and home theater are in my living room.
On "money" of Pink Floyd, basses are very good, and medium + trebles are precise/definite . And "shine on you crazy diamond" is fabulous.

Cordialement.

Pascal.