The B+ goes to the plate of the first audio through R-37, when the
Bass switch is in the IN position (as shown on the schematic) the choke
is bypassed, the B+ to the plate through R-37, when the switch is in the
OUT position, as shown on the diagram R-37 is bypassed and the B+ now
from R-38 goes to the choke and thence to the plate. So, in one position
the plate load is R-37 and in the other position its the choke and
condenser. I am pretty sure the markings on the schematic are reversed.
It seems to me the Bass switch also changes the gain of the stage by
increasing the B+. If I am seeing it right either R-37 or the resonant
choke is put out of the circuit by the Bass switch. It is 2:30AM and I
have no business being on line.
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On 2/15/2025 7:15 PM, don Root wrote:
It seems that the way to look at this switch is that in one position the
plate load is provided by the choke while in the other the load is
switched to R37, and as an aside the choke gets shorted ? Any votes on
this? ?just for fun try the thumbs ?voting machine, I won¡¯t look.
**
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don??? va3drl
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Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
