AP = All purpose.
I've played guitar through a Reeves 4x12 cab loaded with Vintage Purple speakers. I don't think the cab could handle bass frequencies at high volume. They don't even handle a drop tuned guitar all that well compared to some other guitar speakers. For a bass cab from Reeves, their only current options are the 1x15 and 4x10.
I've actually played bass through a Reeves 4x12 loaded with Vintage Purples using a Reeves 225 for power. The Reeves cab handles it fine; the Vintage Purples are a stout, cast frame driver and as such are far less likely to deflect and compromise the VC gap like some cheaper "flexi flyer" stamped frame guitar drivers can with a lower register, high powered bass signal.
However, the AP 412 bass thing just isn't my cup of tea.
I gigged with a Marshall Major through Celestion loaded Marshall 412's in the 70's and wasn't wild about that either, switched to 15's after a few months.
Personally, I think AP 412's are a little "thin" sounding and don't move enough air for bass; but I can cite plenty of examples of players who use/used them and make them sound great IMO.
Some players can make it work, some cant.
As far as using an AP 412 work for bass, Im one of the cant people. Of course, I cant make a short scale bass sound good either.
My point is I realize that it isnt the cab's or the short scale basss fault they sound nasty.