Peavey Black Widow 1501-4DT Kevlar cone?

[emil noothout]

Someone posted a question if some Peavey 1501-4dt speakers were made with a kevlar cone, and when i tried to delete a double post from myself it seems i deleted the whole topic, my excuses.

Anyway, my Session 400 Limited came with this speaker, and when i asked Mike Brown from Peavey about it he told me that it was made with a kevlar cone, and that later versions had a paper cone, the 15601-sb(shallow basket). My understanding always has been: 1501-4dt=kevlar, 1501-4sb=paper, but i've seen confusing information on the web.
When put side by side the sb is less deep, other then that i see no difference.