As Sean said, both speakers will give you deep bottom end but will sound very different. I have a set of hybrid/ribbon speakers, not vmps (Apogee) and the sound from ribbon mid-highs would sound very different than the Dunlavy's.
VMPS RM40 better than Dunlavy IVa?
I'm very curious about the VMPS RM40, i'm about to purchase Dunlavy IVa's, but, now would like to know how the VMPS RM40 compares to it.