The singer for my band has a vintage, high wattage Bassman with the refrigerator style cab and is wanting to scale down in cab size. I am possibly looking at hooking him up with my Hiwatt style cab and have a couple of speaker options. The original speakers are Weber David Gilmour clones and the other quads are Warehouse Invader 50's. Which of these might work best with his Bassman, and could I get a diagram for wiring these to 4 ohms? He know that he will loose some top end.