I did a search on the Fractal Forum and the Fractal Wiki and it appears that the speaker type for the 1x10 Princetone has not been publicly documented. I did find a Wiki page for the 1x10 Black Face Princeton, but there isn't any info listed on the wiki page. Here's the Wiki page that I found:
wiki.fractalaudio.com
Scroll about 3/4 of the way to the bottom of this page and you'll find a list of Dynacabs included in the firmware. If you click on the link next to "1x10 BF Princetone" the page that opens doesn't have any details about speaker type (or anything else for that matter. The page is empty). I checked the amp guide that
@yek put together. However, the amp guide is an older document that doesn't get updated (at least to my knowledge), so it doesn't include information about Dynacabs. However, it appears that
@yek intends to update the amp guide later this year (see
this thread on the Fractal forum). Not sure if an update to the amp guide will include details about Dynacabs associated with an amp model.
The speaker type may be mentioned in a post somewhere, but I wasn't able to find it. So asking someone at Fractal Audio is probably your best bet. Unless someone else is aware of a post that I didn't find.
View attachment 57510