07-29-2025, 03:38 PM
Hi Tidatt,
Definitely add to the volume control. The only difference is that this volume has a "Loudness Contour" tap. Break the connection to Cap 52 at the junction of Cap 50 and Resistor 51. The end of cap 2 goes to the common connector on the switch, the phone jack goes to one leg and a wire from the junction of C50 and R51 goes to the other leg. This thing should kick butt with an aux input. This appears to be a Class AB2 or Class B Audio system with the 42s triode connected. RCA did this also on their sets of this period.
Definitely add to the volume control. The only difference is that this volume has a "Loudness Contour" tap. Break the connection to Cap 52 at the junction of Cap 50 and Resistor 51. The end of cap 2 goes to the common connector on the switch, the phone jack goes to one leg and a wire from the junction of C50 and R51 goes to the other leg. This thing should kick butt with an aux input. This appears to be a Class AB2 or Class B Audio system with the 42s triode connected. RCA did this also on their sets of this period.
"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis
Best Regards,
MrFixr55
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