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Patrick

04-06-2021, 05:32 AM
Haven't done this for awhile, but wouldn't the proper place to install a 3.5mm auxiliary jack be at the the red "X"? It's a 37-670.

[Image: HuSnjBd.jpg]

OZ4

04-06-2021, 09:46 AM
Patrick  I would try it there and just above C48.  I think C48 is part of the tone control. Even cutting in at the left side of C46. Using C46 as a coupling cap.

Patrick

04-06-2021, 02:46 PM
Aha! Then I wouldn't need to install another coupling cap on the jack! Looks cleaner.
The PHILCO Phorum > Philco Radio Discussions > Philco Electronic Restoration > Aux. input verification