Magnepan 3.7

>Josh358, Yankee ribbon has a true "ribbon woofer" ....

That's interesting. How did they do that?

>The magnetic assembly is what determines if it is a true ribbon or not , not the type of diaphram,

You have a point, though I'm thinking that technically it's based on whether the diaphragm is shaped like a ribbon or not (attached at two ends rather than at all four sides). So the Apogees mids mylar backing would still be considered true ribbons, even the ones with three traces.

Of course, since true ribbons are narrow, the magnet assembly changes too, since a side-by-side arrangement has a field that's more linear with displacement. As I understand it, 3" is the maximum you can do that with practical magnets.

Also, as I understand it, at least some ribbons have low tension to put the vertical resonance below the driver's frequency range.

I know the feeling, but at times like this, it's important to remember that despite the raves that accompany any new model, improvements in speakers are incremental! After all, there are still a lot of people enjoying IIIA's. Which is why they hold their value so well, there were a lot of 1.6's for sale after the 1.7 came out but the used price dropped hardly at all. Hell, my 1D's now go for more than I paid for them in the early 80's!

Has anyone heard it at this past week?

Exactly,
The only difference between QR and 'regular' maggie driver is foil vs wire.