06-07-2018, 04:15 PM
http://www.nostalgiaair.org/pagesbymodel...013252.pdf
I would like to know what the 2nd position of the tone switch on a Philco 38-4 or 38-5 is supposed to do. Position 1 is OFF. Position 2 appears to short the volume control tap to ground through a 40K (32K in my radio) resistor. That just lowers the volume in my radio - no apparent affect on the tone. In my radio, the 3rd position appears to be "hi fi", and the 4th and 5th position reduce the treble by various amounts.
I would like to know what the 2nd position of the tone switch on a Philco 38-4 or 38-5 is supposed to do. Position 1 is OFF. Position 2 appears to short the volume control tap to ground through a 40K (32K in my radio) resistor. That just lowers the volume in my radio - no apparent affect on the tone. In my radio, the 3rd position appears to be "hi fi", and the 4th and 5th position reduce the treble by various amounts.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
