Today I put the Altec 3182's, 1 each, into 16" deep H frames - 12 MM Xmax, 1.45 Liters Vd.No EQ, levels matched by ear. XO @ 150 to the Fostex 208ESigmas, 4K to the Cantus ribbons.
Fairly low cone travel, even at high levels (surprised me). Not the "slam" they had before, but tonally, much "righter".
Tomorrow, I'll put the analyzer to them, EQ the roll-off in the bass.
Like GA Briggs said, it all depends on what you listen for. For me, as far as being tonally right, they're the best yet.