10-18-2006, 10:21 PM
Bill T - Hold the phone on the knobs 
Now that I have my copy of Furniture History in front of me, I see that I gave you incorrect info on the knobs.
The 47-1230 actually uses the same type of knobs as 1942 Philco models - the small marbleized knobs with a large triangular shape molded into the face of each, made to fit a 1/2 flatted shaft.
That's what I get for trusting my memory.
Glad to hear you acquired the phono, hopefully the damage will not be anything major. Yes, the magnetic cartridge requires a "boost," as did their Beam of Light pickup. The output of a (working) crystal cartridge is higher than that of a magnetic cartridge. 125 or 128 volts will not pose a problem to the phono motor; it is more important that it is seeing 60 cycle (Hz) AC.
The postwar Philcos used wiring under the chassis with improved insulation that does not dry up and flake off, like the rubber did on prewar wiring.
Now that I have my copy of Furniture History in front of me, I see that I gave you incorrect info on the knobs.
The 47-1230 actually uses the same type of knobs as 1942 Philco models - the small marbleized knobs with a large triangular shape molded into the face of each, made to fit a 1/2 flatted shaft.
That's what I get for trusting my memory.
Glad to hear you acquired the phono, hopefully the damage will not be anything major. Yes, the magnetic cartridge requires a "boost," as did their Beam of Light pickup. The output of a (working) crystal cartridge is higher than that of a magnetic cartridge. 125 or 128 volts will not pose a problem to the phono motor; it is more important that it is seeing 60 cycle (Hz) AC.
The postwar Philcos used wiring under the chassis with improved insulation that does not dry up and flake off, like the rubber did on prewar wiring.
--
Ron Ramirez
Ferdinand IN
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
