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Joined: Dec 2008
City: Chicago, IL
I have two speakers. A single ended one for a Philco 90 with an open field coil and missing output transformer.
The one shown above is for a Philco 20 with push-pull 71A driving it. I disconnected the center tap and tied one end of the output transformer to one side of the field coil to make it compatible with my 90.
Messages In This Thread
RE: Philco 90 restoration - by Bob Andersen - 10-30-2021, 12:54 AM
Users browsing this thread: 9 Guest(s)
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Recent Posts
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PT-6 finished!!
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Actually the Loctal tube series, with number beginning with "14" are 12.6 volt tubes, at 150 ma, I'm not sure ...Arran — 02:14 AM |
philco predicta
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The model is the holiday without UHF It has no sound and I don't have an oscilloscope or signal generator.cgl18 — 08:51 PM |
Philco model 38 code 121 not receiving signal.
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I will definitely check my lead length and wire dressing. Thanks for the ideas.Stormlord5500 — 08:06 PM |
Philco model 38 code 121 not receiving signal.
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Do make sure that you twist the 3 wires from the chassis to the transformer, and dress away from tubes, especially audio...MrFixr55 — 07:38 PM |
Philco model 38 code 121 not receiving signal.
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The cone unfortunately got damaged when I removed it. The glue that held the cone to the basket was sloppily applied and...Stormlord5500 — 07:12 PM |
Philco model 38 code 121 not receiving signal.
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So what was wrong with the original speaker? Was the cone damaged? Unless it's totally hopeless I would put it aside as ...Arran — 05:31 PM |
My collection presentation
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There is an article on my site that introduces the first portable radios in my collection. I have only provided a link t...Vlad95 — 01:17 PM |
Electrolytic restuffing/internals
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Bridkarl
This specific cap you have is the easiset type to restuff.
I usually cut it at the upper border of the depr...morzh — 11:35 AM |
philco predicta
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Hi CGL18,
First off, welcome to the Philco Phorum. I have not worked on a TV for a while but here are some givens:
...MrFixr55 — 08:22 AM |
Another amp build - here I go again!
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Sweet!
I actually have a Dynaco Mark 4 that I had been running with 6L6s with no mods. Seemed to my 14-year-old head a...MrFixr55 — 12:57 AM |
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