Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

philco model pt-4
#5

A couple of thoughts. If your field coil is open you can do as I mentioned. The pole inside the spkr as some residual magnetism and it may work. How well it will work I'm not sure. I have heard of sticking a small rare earth (powerful) behind the fc at the back of the spkr to increase the magnetism.
The other option is the replace the spkr with a permanent magnet one. I think that this set uses a 4"x6" oval. These are not all at common. And the other trick is to be able to mount the output transformer on it's back. I'm not saying it's impossible but will take a little hunting to find a proper candidate.
GL

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!

Terry


Messages In This Thread
philco model pt-4 - by tonto007 - 05-08-2020, 10:18 PM
RE: philco model pt-4 - by Radioroslyn - 05-09-2020, 04:41 AM
RE: philco model pt-4 - by tonto007 - 05-09-2020, 09:43 AM
RE: philco model pt-4 - by Nathan Slingerland - 05-09-2020, 10:21 AM
RE: philco model pt-4 - by Radioroslyn - 05-09-2020, 11:04 AM
RE: philco model pt-4 - by tonto007 - 05-09-2020, 11:30 AM
RE: philco model pt-4 - by Radioroslyn - 05-09-2020, 11:37 AM
RE: philco model pt-4 - by tonto007 - 05-09-2020, 11:47 AM
RE: philco model pt-4 - by Radioroslyn - 05-09-2020, 11:54 AM
RE: philco model pt-4 - by Radioroslyn - 05-09-2020, 12:08 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
That looks a lot like an aircraft connector of some kind, even if it's a U.S.N power supply. I have a book somewhere abo...Arran — 02:56 AM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
hello david, I have a similar generator in my collection that features a cast iron, single-cylinder Briggs & Stratt...radiorich — 01:00 AM
under chassis parts locator diagram for 1938 Zenith 9s262
Has anyone gone to the trouble of creating an under chassis parts locator image?  Yes, I can identify components by foll...bobloney — 08:57 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Try looking at this site the book mark is for a old generator that I was given. David    https://radionerds.com/index.ph...David — 08:36 PM
Plug Voltages Needed For A 1943 CRV-20130 Power Supply
Hello Everyone, I am looking for voltage identification for all the pin positions on the socket of a CRV-20130 power su...Tonym4704 — 08:16 PM
Philco P45-6365 Universal Transformer Instruction Manual
Can anyone guide me to where this may be found?GRG — 03:00 PM
54C Complete Teardown/Rebuild
I don't think that I have encountered a 12Z3 before, curious how it uses one of those but includes a #43, which is a 25 ...Arran — 02:17 PM
HiFi (Chifi) tube amp build - but my own design.
It's the other forum. I'm also in DIY, but mostly read there. Honestly, I kinda jumped into this without much thought to...TV MAN — 10:43 AM
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM

[-]
Who's Online
There are currently no members online.

>