Philco 38-7 Speaker - Printable Version

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+--- Thread: Philco 38-7 Speaker (/showthread.php?tid=25197)

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Philco 38-7 Speaker - tludka - 08-19-2024

I have a 38-7X Console radio which is missing the speaker. I have a speaker for a 38-38X however it has a different output transformer attached, and the speaker is stamped as a HR-20 and is driven by a push pull output tube 1J6G. The schematic / parts listing for the 38-7X calls for a H 31 speaker driven by a 6F6G output tube. Is there a way to modify the HR 20 or use a totally different speaker?

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RE: Philco 38-7 Speaker - Radioroslyn - 08-19-2024

You'll need an opt to match the 6F6/42 to VC vs the 1J6. And something to replace or act as the field coil. The 1J6's output is somewhat less than the 6F6 so wouldn't be a good idea to try the the opt on the spk. The current rating is going to be too low and the load resistance too high.

Replacing the spkr w/a modern one is the same. Find an opt 5k to vc and something to replace the fc.

https://philcoradio.com/library/download/service%20info/service%20bulletins/Philco%20Service%20Bulletin%20280.pdf

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