Posts: 1,407
Threads: 72
Joined: Oct 2007
City: Linn Creek, MO
Now the speaker. The correct speaker for the late version 90 is nearly impossible to find. The push-pull 47 pentodes need a much higher impedance speaker than the 45 triodes used in the early version 90. I had planned to make do with an early version speaker but as it turned out, the one I had, has a bad output transformer. The cone is bad also and I had planned to replace it. So, up to now, I have been using the speaker out of my Philco 20 for testing the chassis.
[Image: https://live.staticflickr.com/65535/4924...5f12_k.jpg] 100_0200 by Steve Davis, on Flickr
I removed the transformer, the cone and the field assembly. I then cleaned and painted the "pie pan".
[Image: https://live.staticflickr.com/65535/4924...69a6_k.jpg] 100_0202 by Steve Davis, on Flickr
Steve
M R Radios C M Tubes
Messages In This Thread
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 05:01 PM
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Recent Posts
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An attempt to remove the Field Coil from a G speaker
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| Hi Morzh,
May be a good idea to remove the cone to prevent damage. You may have to do so anyway to remove the pole ...MrFixr55 — 08:44 PM |
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Philco 91 Restore Code ??
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| I think that Danaher, the company that owns Beckman-Coulter (the company that I worked for 41 years) owns Fluke. They a...MrFixr55 — 08:35 PM |
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Philco 91 Restore Code ??
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| Rod
I wish... :lol:
I am not sure I'd buy the Fluke, had it not fell in my lap for free. $500 to $800...it's a lot...morzh — 08:09 PM |
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Philco 91 Restore Code ??
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| Mike, ...you get a commission?RodB — 07:52 PM |
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New member
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| Hi. I specialize in refurbishing Predictas, but I'm in Chicago. If you can get it to me, I'd be happy to go over it. ...Bob Andersen — 06:43 PM |
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An attempt to remove the Field Coil from a G speaker
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| I have 3 G speaker, all with open Field coils.
Today I pull one of the shelf and decided to try to remove the FC (spo...morzh — 06:07 PM |
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Philco 91 Restore Code ??
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| Thanks Mike. I will check them out.dconant — 05:52 PM |
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Philco 91 Restore Code ??
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| There is no such thing as bad Fluke.
This said, they are expensive. A Fluke is easily 10x the price of comparable CCC...morzh — 05:45 PM |
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Philco 91 Restore Code ??
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| Hello Mike,
Yes, I have 3 Fluke meters one being my first Fluke 77 and other being Fluke 87.
My third is Fluke clamp -...radiorich — 05:04 PM |
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Philco 91 Restore Code ??
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| I knew that Fluke was the Cadillac so with that in mind what Fluke would you recommend I get?dconant — 03:53 PM |
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