Advent 6003 speakers

[ironlake]

Has anybody seen or heard these speakers. I found a complete brochure on these in my old advent stuff. They are interesting in that they are a 3 way system. they are fairly good size and weigh in at 55lbs. system resonance is 42 hz and have a -8db down point of 28 hz and a high end of 23khz only down 3db there.. Not in the big ar league for bottom end but big in size and high frequency.