Well with help from this forum I have found that my interstage transformer that connects from the 27 tube 1st audio on the primary and connects to the 2-45 output grids on the secondary is open on the secondary, I have been given different ideas as to what to use to replace it, but since I have no idea what the impedances are in this radio is there a good all purpose universal transformer that I can use to replace this without to many problems, this is a 1929 us radio and television model 41 , I assume this is a push-pull with 2-45 outputs?
Thanks for your help

:Well with help from this forum I have found that my interstage transformer that connects from the 27 tube 1st audio on the primary and connects to the 2-45 output grids on the secondary is open on the secondary, I have been given different ideas as to what to use to replace it, but since I have no idea what the impedances are in this radio is there a good all purpose universal transformer that I can use to replace this without to many problems, this is a 1929 us radio and television model 41 , I assume this is a push-pull with 2-45 outputs?
:Thanks for your help
:
Elton,

An interstage 1:3 impedance ratio transformer will probably work here. One equivalent to a Stancor A53C. Tubesandmore.com has a couple listed on their website. Others here on this forum may have a better solution.

Radiodoc

Elton: Yes, that Stancor A53-C made-in-Mexico knock-off sold by AES will work. It has a center-tapped secondary, which is what you need for a push-pull output.

AES gets $15.70 for this xfmr (Cat. No. P-T156). But RadioDaze sells a genuine Hammond xfmr that is comparable for $12.69 (Cat. No. HX124A).

Both the Hammond and the AES knock-off weigh the same, so seem to have the same amount of iron in their cores. The Hammond has heavier gauge wire leads. Both have worked fine for me, but I prefer the Hammond on general principles.

:Elton: Yes, that Stancor A53-C made-in-Mexico knock-off sold by AES will work. It has a center-tapped secondary, which is what you need for a push-pull output.
:
:AES gets $15.70 for this xfmr (Cat. No. P-T156). But RadioDaze sells a genuine Hammond xfmr that is comparable for $12.69 (Cat. No. HX124A).
:
:Both the Hammond and the AES knock-off weigh the same, so seem to have the same amount of iron in their cores. The Hammond has heavier gauge wire leads. Both have worked fine for me, but I prefer the Hammond on general principles.
:
:
Doug,
Thanks, RadioDaze.com had slipped my mind.
Radiodoc

Remember that higher impedance will usually allow more bass response. Lower impedance will reduce bass response. Too high of an impedance may reduce treble response or otherwise open up the circuit too much, causing it to sound sort of harsh. This rule holds true for the primary, though the secondary can be quite the opposite, depending on how it is wired to the grids of the output tubes. Using too high of an impedance on the secondary can cause things to be harsh. Too low of an impedance usually causes gain to be low and bass notes to be excessive. Using a universal interstage transformer will allow you to both choose the ratio you desire and the primary and secondary impedances you desire. Something that gives you the most gain may not necessarily give you the most faithful reproduction. Unfortunately this does not say much about the values of the original transformer, but it gives you something to go by when wiring in your new transformer.

Thomas

Guys thanks for your input now I know what to get I will order it and let you all know how it works out.
Thanks
Elton

::Elton: Yes, that Stancor A53-C made-in-Mexico knock-off sold by AES will work. It has a center-tapped secondary, which is what you need for a push-pull output.
::
::AES gets $15.70 for this xfmr (Cat. No. P-T156). But RadioDaze sells a genuine Hammond xfmr that is comparable for $12.69 (Cat. No. HX124A).
::
::Both the Hammond and the AES knock-off weigh the same, so seem to have the same amount of iron in their cores. The Hammond has heavier gauge wire leads. Both have worked fine for me, but I prefer the Hammond on general principles.
::
::
:Doug,
:Thanks, RadioDaze.com had slipped my mind.
:Radiodoc
: