[quote name='BassTractor' timestamp='1395496549' post='2403059']
Now I'm not a technician, but IME deep lows mean cab volume, and cab volume means cab weight.
[/quote]
I've just bought a pair of GK Neo 112 mk2s from castlemaine of this parish, and they are astonishingly light (lighter than my now-redundant TC RS112) at about 14kg/30lbs, and each is about half the volume of a typical 4x10. Good lows, adjustable tweeter. However they are a little on the large side to lug around on a bus.