From the article: "RM: I think versatility was another factor that was given in-depth consideration. The panel can be used in a simple 2.1 bookshelf application, in 2-way hybrid bookshelf speakers or a larger floor standing speaker using one or two panels in a stacked array."
My Janszen zA2.1s use two stat panels vertically stacked to form the array in each cabinet. I noticed that Janszen was credited doing this even back to the 60s and 70s. The approach makes for a wonderful product when mated to the right hybrid woofers. I love these speakers. The DIY possibilities do seem wide open.

