Upper panel protects horn rotor. Lower louvered panel protects drum rotor. Middle panel is necessary for proper acoustical tuning/porting of the cabinet. Made of cabinet grade veneer core birch plywood.
NOTE: We also have a limited number of original vintage pre-stained top and bottom louvered panels in stock for immediate delivery, as well as two top and bottom rear panel sets for current production models 122A, 122XB, 147A and 971. Stain color shown below is representative only and subject to availability.