Speaker design myths revealed


I found this at the Jordan web site. Maybe the experts can say whether this is true or not. I will say I have not heard the big improvement with a narrow baffle vs. wide baffle that I am "suopposed" to.
Q: In your VTL box design, why is the JX92S fitted in the wide face when it is common knowledge that the box should be as narrow as possible?

A: 'Common knowledge' and scientific fact are often very different. The narrow front face is a fashion concept supported by some very questionable marketing rational. The indisputable scientific fact is that the ideal mounting for a loudspeaker is an infinitely large flat baffle and this is the concept used for all loudspeaker analyses. A wide baffle always sounds better.

Q: What are the recommended advantages of positioning loudspeakers as close to the wall as possible?

A: This positioning secures, to some extent, the advantages described in the previous question. In addition it minimises the time delayed reflections from the rear wall which contribute to confused imaging.

Q: Will placing next to a wall ruin the stereo image?

A: We cannot see any reason why this would impair imaging. Possibly more than any other manufacturer, we have concerned ourselves with accurate and stable imaging and certainly would not promote a design that would impair this.
cdc
Cdc, I am currently in the process of putting together an "open baffle" design. If you are interested, I will let you know my impressions when the drivers are broken in.
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.
Wow, Fiddler. I expect you're trying out Phy's recommended open baffle with the piano hinges on the side flaps... Planning to use a tweet???