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phono matching transformer
#1

Hi all, I am currently restoring a 46-1209, The radio is playing great, now the phono is dead, I thought it might be the cartridge, but I see my matching transformer is missing. Is there a modern replacement I could use for this? The riders I have is bad , and the windings look like they should be
Pri - .5 and sec - 6500? seems like a big step up, if I am reading this right.
Any ideas or suggestions are apreaciated.
Thanks
E.
#2

Hi E.,
Bear in mind that the measurements you see on the Riders is resistance not impedance. The impedance (Z) is the important measurement when you are looking for a replacement. So with being said just for laughs you could try a tube type output transformer, speaker side to the cartridge or a small power transformer like 120vac to 24v or 36v. The low voltage side goes to the cartridge. I mention these thinking you may have them laying around. You could use a microfone input transformer. The those have a multi tap primary from 50 ohms (Z) to 500 or so.
GL
Terry




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