Methods and apparatuses are provided for generating electrical power for a cellular tower using solar troughs. The discharge tubes emit light according to the electrical discharges of the first and second common discharge units. Each welding material member is mounted on the sheet such that when the sheet is placed between the exterior surfaces of the first and second weldable members to be welded, each welding material member is electrically conductively disposed therebetween. The filter circuit maintains a corner frequency which is proportional to the inverse of audio level in order to mimic the Fletcher-Munson curves. The component is preferably provided as a glass ribbon and the component is preferably secured in the cavity using laser fusion.