I have owned Carolina Audio JTM speakers for about a year now. These speakers use the Jordan driver in a wide baffle transmission line enclosure. I have owned many other speakers, including five other brands at present. So far, compared with these other speakers I have found this implementation of the Jordan driver to be the best all-around speaker for typical rooms I have yet owned. As Sean pointed out, the wide baffle helps with the bass. With the JTMs bass is very accurate and satisfying without a sub. They are easier to place than any speaker I have owned- much less sensitive to side and rear wall distances (perhaps the limited off-axis dispersion of single driver speakers helps with this as well- this is a liability as well). The design does a good job of highlighting the strengths of this 4'' Jordan driver, while achieving in-room bass comparable to many floorstanders out there.
The Jordan drivers themselves measure flatter than most other single-drivers (see the Nelson Pass measurements on 6moons comparing different single drivers), and when used in this kind of enclosuse, can deliver fairly flat in-room response without a lot of tweaking. Considering how good these drivers are, surprising there aren't more speakers out there using them. Seems like most interest in single drivers is for use with low power SETs. A shame since this kind of speaker works well with more common solid state and tube audiophile gear.
The Jordan drivers themselves measure flatter than most other single-drivers (see the Nelson Pass measurements on 6moons comparing different single drivers), and when used in this kind of enclosuse, can deliver fairly flat in-room response without a lot of tweaking. Considering how good these drivers are, surprising there aren't more speakers out there using them. Seems like most interest in single drivers is for use with low power SETs. A shame since this kind of speaker works well with more common solid state and tube audiophile gear.