It is definitely punch and has clarity but not the deep old school bass in my head, regardless of Equing. Might just be in my head though.
The old school 2-15" thump is the Yamaha (sunn clone) that I have. Toast has the real deal Sunn cab that mine was based on. I wish these popped up more frequently. That cab is all kinds of old school.
The Carvin B cabs are pretty good too. Scored my first 1-15" for $215 from their ebay store. It was so good, I bought the second one as new for $300 (didn't want to wait for another one to pop up as blem).
I recommend the Carvin 1-15" cabs for a really good , budget option 15.
This one (to be clear): [Invalid or Expired Link Removed]
My rig could handle 8 of these, and I would be really happy. My only complaint is that the tolex seems really cheap.