I have built three type of the DC power supply for WE 555 driver. Top is a selenium rectifier. Middle is Tungar bulbs. The bottom is Western Electric rectifier tubes I have built recently.
Music is art. Loudspeaker is science. The WE 16A horn is art plus science. I have never seen such an excellent work in viewpoint of the sound and the design. Please email me at we16ahorn@gmail.com if you have further questions.