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Philco 90 Restoration
#37

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
Philco 90 Restoration - by Steve Davis - 12-03-2019, 12:15 PM
RE: Philco 90 Restoration - by Steve Davis - 12-03-2019, 06:10 PM
RE: Philco 90 Restoration - by KCMike - 12-03-2019, 07:11 PM
RE: Philco 90 Restoration - by Ron Ramirez - 12-03-2019, 09:31 PM
RE: Philco 90 Restoration - by rfeenstra - 12-03-2019, 09:43 PM
RE: Philco 90 Restoration - by Steve Davis - 12-03-2019, 09:58 PM
RE: Philco 90 Restoration - by jake wells - 12-03-2019, 10:19 PM
RE: Philco 90 Restoration - by rfeenstra - 12-03-2019, 10:32 PM
RE: Philco 90 Restoration - by Steve Davis - 12-03-2019, 10:37 PM
RE: Philco 90 Restoration - by jake wells - 12-04-2019, 06:26 AM
RE: Philco 90 Restoration - by Steve Davis - 12-04-2019, 08:57 AM
RE: Philco 90 Restoration - by Steve Davis - 12-04-2019, 06:03 PM
RE: Philco 90 Restoration - by Steve Davis - 12-04-2019, 06:20 PM
RE: Philco 90 Restoration - by jake wells - 12-04-2019, 06:21 PM
RE: Philco 90 Restoration - by Steve Davis - 12-05-2019, 01:49 PM
RE: Philco 90 Restoration - by jake wells - 12-05-2019, 04:18 PM
RE: Philco 90 Restoration - by Steve Davis - 12-05-2019, 08:44 PM
RE: Philco 90 Restoration - by jake wells - 12-05-2019, 09:27 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 01:41 PM
RE: Philco 90 Restoration - by Jake Blake - 12-11-2019, 02:06 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 02:36 PM
RE: Philco 90 Restoration - by Jake Blake - 12-11-2019, 02:39 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 03:12 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 10:16 PM
RE: Philco 90 Restoration - by Steve Davis - 12-11-2019, 10:31 PM
RE: Philco 90 Restoration - by 462ron - 12-12-2019, 07:48 AM
RE: Philco 90 Restoration - by Steve Davis - 12-12-2019, 10:43 AM
RE: Philco 90 Restoration - by Kestas - 12-12-2019, 02:34 PM
RE: Philco 90 Restoration - by Steve Davis - 12-13-2019, 09:14 PM
RE: Philco 90 Restoration - by Jake Blake - 12-13-2019, 09:24 PM
RE: Philco 90 Restoration - by Ron Ramirez - 12-13-2019, 09:26 PM
RE: Philco 90 Restoration - by Ron Ramirez - 12-13-2019, 09:27 PM
RE: Philco 90 Restoration - by Jake Blake - 12-13-2019, 09:29 PM
RE: Philco 90 Restoration - by Steve Davis - 12-13-2019, 09:55 PM
RE: Philco 90 Restoration - by Steve Davis - 12-16-2019, 10:03 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 12:32 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 04:01 PM
RE: Philco 90 Restoration - by rfeenstra - 12-19-2019, 04:23 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 04:47 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 05:17 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 06:26 PM
RE: Philco 90 Restoration - by Phlogiston - 12-19-2019, 06:33 PM
RE: Philco 90 Restoration - by Steve Davis - 12-19-2019, 06:56 PM
RE: Philco 90 Restoration - by Steve Davis - 12-24-2019, 10:59 AM
RE: Philco 90 Restoration - by morzh - 12-24-2019, 11:15 AM
RE: Philco 90 Restoration - by rfeenstra - 12-24-2019, 12:07 PM
RE: Philco 90 Restoration - by Steve Davis - 12-24-2019, 01:51 PM
RE: Philco 90 Restoration - by rfeenstra - 12-30-2019, 04:58 PM
RE: Philco 90 Restoration - by Steve Davis - 12-30-2019, 10:40 PM
RE: Philco 90 Restoration - by Steve Davis - 01-03-2020, 08:03 PM
RE: Philco 90 Restoration - by Simon Wa3uay - 01-03-2020, 08:07 PM
RE: Philco 90 Restoration - by Jake Blake - 01-03-2020, 09:32 PM



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