Left and right channel fuses are located at the back of the cabinet. Walnut vinyl finish. Later changed to walnut veneer. Black grille cloth. Tweeter fuse is located at the back of the cabinet.
Walnut finish with clear vinyl laminate.
Replaceable top and base. Black grille cloth. Plug-in printed circuit crossover board. Crossover cover at the top front has block diagram plus main and tweeter fuses. Red and yellow indicator lights at the bottom right.