Exactly, the bloke I bought it from had set this up as Drop A, so A E A D F# B, still a little slack on the sixth but not so bad a de tuning to C on a standard guitar (think Smashing Pumpkins, everlasting gaze)
i think the lowest tuning I've experimented with is tuning the guitar down to "B" so that it goes B,E,A,D,G,B, from low to high, and I was using a set of 46 to 10 gauge strings at the time, even then they were getting a bit floppy.