Power is very cheap and light these days, and EQ is easy.Right there are a couple of long excursion 12" PA drivers with 3" VC (or even bigger diameter) available which can come close to the fridge with even less than half the size of the cabinet. The drawback will be lots of more power to get the same SPL and also the need to support the midrange by smallish cone or something else. Another drawback might be a less colorful voicing versus full range running OEM MI drivers. As usual there is no free lunch.
Nothing I have read about the "super cabs" sounds like they don't deliver the lows.