Quote:
Originally Posted by mbates14
Doing some more searching, I found this:
http://antiqueradios.com/forums/view...80269#p2680269
Basically states that they removed resistor E, and moved the common tie point from pin 5 to pin 6.
So technically I could swap the wires from 5, and 6, but then I lose the 22 Ohm resistor.
But according to the TS-4D schematic, that resistor is in parallel with the audio preamp tube filament.
Question is, Why? and what would happen if it was "missing"? |
The 1st audio tube is at the end of the heater string in the 600ma leg.
The 6SQ7 is a 300ma tube so the resistor has to be in parallel with the heater to equal 600ma. 22 ohm and at least 2 watt.