I believe it does have the older, more desirable Bart set up - it's serial# 379 so she was crafted in 1999 according to Lakland.com's serial# [Invalid or Expired Link Removed].
I used to have it on the 500 hz setting (default I believe) and never really touched the mid control, but changed it to 250 hz a yr or so ago to give it low end heft without getting too muddy. Maybe i'll try the 850 hz setting to give it more 'chunk' and get the low end from the more-than-capable bass eq.
The reason I was asking was I wasn't sure if the 850 hz was recommended to help the overtones from the lower notes of the 55-94 jump out or just for overall kick-a$$ed-ness.
I will get you a field report soon enough - band practice is on tuesday.
Quoting myself here because I've been MIA for 12-odd some pages

So I've switched my '99 4-94D's mid freq to the 850 hz, and all I can say is WOW. There's the cut I've been looking for.
Played some funk at a tuesday night jam session. Had the rear coil selected of the MM pu, pan 3/4 towards the bridge, bass and mid at about 3 o'clock (looking straight at the bass).
DAyuuuuuuuum. There's the grease-y back pickup bark I wanted. And when I wanted to slap, slight mid cut (very slight), pan to center. Viola! Great stuff. If anyone has the older Bart system like I do I highly recommend giving this a shot.