Need info or source for L16/17/18 split secondary audio interstage xformer.
Need info why R12 missing and L26/27 paralleled.

Hi Marv

Use AES, www.tubesandmore.com , part number P-T124E. It has a center tapped primary and two secondary windings. You might find a similar transformer from PTOP, www.oldradioparts.com .

Norm

:Need info or source for L16/17/18 split secondary audio interstage xformer.
:Need info why R12 missing and L26/27 paralleled.

One more thing - L26 & L27 are both 2.5 volt windings supplying heater type tubes. No problem with connecting the two in parallel and eliminating R12. You still have R6 for hum balance. If R12 was damaged this would be a good way to go.

Didn't find anything in Edison paperwork showing this as a factory change.

Norm

:Hi Marv
:
: Use AES, www.tubesandmore.com , part number P-T124E. It has a center tapped primary and two secondary windings. You might find a similar transformer from PTOP, www.oldradioparts.com .
:
:Norm
:
::Need info or source for L16/17/18 split secondary audio interstage xformer.
::Need info why R12 missing and L26/27 paralleled.

:One more thing - L26 & L27 are both 2.5 volt windings supplying heater type tubes. No problem with connecting the two in parallel and eliminating R12. You still have R6 for hum balance. If R12 was damaged this would be a good way to go.
:
:Didn't find anything in Edison paperwork showing this as a factory change.
:
:Norm
:
:
::Hi Marv
::
:: Use AES, www.tubesandmore.com , part number P-T124E. It has a center tapped primary and two secondary windings. You might find a similar transformer from PTOP, www.oldradioparts.com .
::
::Norm
::
:::Need info or source for L16/17/18 split secondary audio interstage xformer.
:::Need info why R12 missing and L26/27 paralleled.

Thanks Norm,
Guess I need a plate to voice coil xformer for the 45's output too. Re-coned the speaker, then found that bad boy had gone south on the primary side.

::One more thing - L26 & L27 are both 2.5 volt windings supplying heater type tubes. No problem with connecting the two in parallel and eliminating R12. You still have R6 for hum balance. If R12 was damaged this would be a good way to go.
::
::Didn't find anything in Edison paperwork showing this as a factory change.
::
::Norm

::Appears to be a factory mod, because magnet wire exits thru it's terminal (continous) is soldered and is then soldered to its parallel twin terminal. I guess with a single filament winding, there would be no need for hum balancing.
New subject!! Original chassis color was dark green and I was able to closely match it with paint (moss green) from a craft shop. But, was it really military olive drab (OD)? Did Edison build these chassis for the military?
Next subject!! I've yet to see this unit in a cabinet. Did Edison supply these units to furniture/cabinet makers, for resale under their own trademark? As depicted in all my dwgs, the unit came with a wood front panel attached to the TRF chassis and an intricately detailed (scroll) metal dial escutchen plate. Just below the escutchen is remaining evidence of another small plaque/placard attached with 2 small screws, but long since removed. Will the S/N reveal to whom or when this unit was sold and the design of missing placard? Sure would like to see a picture in its original cabinet, but I can still create one with an authenic retro look.
marv
:::Hi Marv
:::
::: Use AES, www.tubesandmore.com , part number P-T124E. It has a center tapped primary and two secondary windings. You might find a similar transformer from PTOP, www.oldradioparts.com .
:::
:::Norm
:::
::::Need info or source for L16/17/18 split secondary audio interstage xformer.
::::Need info why R12 missing and L26/27 paralleled.
:
:Thanks Norm,
:Guess I need a plate to voice coil xformer for the 45's output too. Re-coned the speaker, then found that bad boy had gone south on the primary side.
: