813 Tube Amplifier Schematic. 813 amplifier an all purpose 813 amplifier figs. 6 69 through 6 72 show the circuit and photographs of an 813 amplifier designed for c w a m or s s b.
Vintage Audio Rca 813 Ad From The November 1938 Issue Of Radio Vacuum Tubes Fb Tube Vintage Radio Vintage Radio from www.pinterest.com
Mechanical layout top and rear views of the 2x 813 amplifier with the cabinet removed are shown in figures. This is a single ended triode amp that i built using the 813 transmitting pentode connected as a triode. The similar amp at similar price is called sound track 813 class a integrated valve tube amplifier and to me looks even better than audioromy.
The supplied 813 s are obviously chinese made but this radio broadcasting tube was popular worldwide in the 50 s and is available as nos from many many brands.
The overall layout and architecture are very similar to the hb 600 linear. In addition the bias circuit used in those mid 20th century amplifiers seems a bit overpowered. The circuit is shown in 6 70. The supplied 813 s are obviously chinese made but this radio broadcasting tube was popular worldwide in the 50 s and is available as nos from many many brands.
