El, although an earlier Stereophile review found the standard 2 series speaker to have a sensitivity of 82db, the Signature version had a measured sensitivity of 84db. The link is as follows: http://stereophile.com/loudspeakerreviews/284/index7.html
either way, this is pretty low, but would not really account for the bass issue. Different measuring techniques probably account for the difference, rather than any attempt to deceive. Stereophile measures anechoically, which seems standard. Vandersteen may be using the more optimistic in-room measurement.
either way, this is pretty low, but would not really account for the bass issue. Different measuring techniques probably account for the difference, rather than any attempt to deceive. Stereophile measures anechoically, which seems standard. Vandersteen may be using the more optimistic in-room measurement.

