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City: Sandwick, BC, CA
You could try freeing up the frozen voice coil, but that would involve removing the spider, cone, and voice coil, to do it properly if dirt or rust has caused it to seize. Sometimes they seize up due to cone warpage, which can be fixed by inserting some thin but stiff material as shims between the pole piece and the voice coil, and then by wetting the cone and spider to re-align it. If you want to remove the whole cone just soak the area around the outside of the cone with lacquer thinner, the same goes with getting an externally mounted spider out with the cone and voice coil, don't forget to unsolder the voice coil leads first.
Regards
Arrran
Messages In This Thread
RE: 38-15 Restoration - by Arran - 05-12-2013, 11:03 PM
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An attempt to remove the Field Coil from a G speaker
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Gary
I in fact did, on a 38-14, I think, where I had a speaker with the dead coil.
Well...it kinda worked. Kinda, be...morzh — 10:38 PM |
An attempt to remove the Field Coil from a G speaker
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Mike, what ever happened to that plan you had to try using a rare earth magnet to magnetize the pole? This looks like a...GarySP — 10:25 PM |
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Beautiful set.morzh — 09:07 PM |
An attempt to remove the Field Coil from a G speaker
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Well....here it is.
The green stuff. Unfortunately, probably penetrates deep.
I opened the top layer and saw that:
...morzh — 08:58 PM |
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:clap: :clap: :clap: :clap:
Really nice workmanship!!! Top of the chassis looks great.
Sorry about the long winded e...MrFixr55 — 08:09 PM |
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Thank you for your reply. I will check voltages on the other tubes, look at resistor 23 and cap 25, etc. If all else fai...bluecap — 07:58 PM |
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Nice looking set great save. DavidDavid — 07:48 PM |
Philco 89 indicator light.
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Hello Jim, I have done several 89s. The trick is to move the drum in or out on it's shaft. You will need to loosen a set...dconant — 07:36 PM |
An attempt to remove the Field Coil from a G speaker
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MrFixr
Yes, it is my plan to go with 45rpm spider if I go that far.
No, the pole was not left-handed as I unscrewed ...morzh — 07:14 PM |
Philco 40-120C Restoration
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Change the tube. Check the tube's bias network.
Are any other tubes experience the drop or just this?`
Is resistor 23 OK...morzh — 07:09 PM |
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