I for one don’t mind that design of speaker/strobe (though it’s looked different since around 2007 or so when Gentex updated the design to what it is today), even if that particular one appears to be mounted sideways going by the way the reflector is facing.
I also find it interesting that the one before that (at the top-left corner) uses a nearly (if not outright) identical speaker to some Wheelock signals like the ET-1070-series (the strobe is also somewhat similar even if it’s not identical). You don’t suppose Gentex once had a partnership of sorts with Wheelock do you? (Simplex did for the strobes on some of their 4903-series strobe plates)