I was looking at the specs for the Fender Super Bassman (not the Pro; the blonde/oxblood one here) as well as the matching 410 and 610 combos (found here and here respectively). I've noticed the wattage of the head is well under the rating for the cabinets. Should I worry about this? Will it be an issue? My guess is Fender did this simply to make the cabinets more compatible with other manufacturers' heads.