1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Philco 112 speaker to permanent magnet
dirkbuddy
Junior Member
**
Posts: 39
Threads: 8
Joined: Feb 2014
City: Medicine Hat, Alberta canada
#11

03-24-2018, 07:49 AM
Thanks for the replies folks, I'm going to tackle removing the cone as per Radioroslyn suggestion when I have time here.  But getting back to my original question and the first post with my attached drawn up schematic,  IF i had to replace the speaker, say with a PM speaker, Would I have to A) Change the output transformer to one that will be able to drive a 6 ohm PM?  B) Replace the field coil with a 3.2 K resistor? If so what wattage?
C) Increase the 2nd Electro cap from 6uf to 12 uf?  D) Do I have to do anything with the filter choke?    am I on the right track here ?
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
RE: Philco 112 speaker to permanent magnet - by dirkbuddy - 03-24-2018, 07:49 AM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
91H Code 126 Restore
When it comes to the cloth covered power cords, if they are not frayed, and are flexible, and if I can bend one without ...Arran — 06:21 PM
An attempt to remove the Field Coil from a G speaker
Could be. The central cylinder is OK, but the sides are...well. What's done is done. I wonder if some standard bobbine w...morzh — 06:02 PM
An attempt to remove the Field Coil from a G speaker
Mike; As I was saying it doesn't look like they used much of a bobbin for the field coil, not like a Magnavox one wou...Arran — 05:49 PM
Atwater-Kent 84, restoration.
This AK84 was bought, I think, last fall. For a whopping $100. It has been, according to the seller, restored. As I go ...morzh — 05:48 PM
Philco model 60
Plus I forgot that I have a spare complete Philco FC speaker, that would work perfectly, now that I don’t need it. Got i...Radios1340 — 05:36 PM
Philco model 60
Duh! I guess I can’t read an ohm meter today. I took the oscillator coil out and will take some readings tomorrow.Radios1340 — 05:30 PM
An attempt to remove the Field Coil from a G speaker
Well, I killed the coil. Tried to get to the end of that oxidated spot, but while holding the coil in hand, i let it sl...morzh — 05:27 PM
91H Code 126 Restore
It does not require taking apart. Find an opening, any gap that would lead inside, where the resistive element and the ...morzh — 04:59 PM
Philco 70 antenna lead
I agree. From the ones I've worked on its always been that green corrosion that causes the coils to open.Jim Dutridge — 04:34 PM
91H Code 126 Restore
Well I'm making good progress. All the bakelite blocks have been recapped.  I found that using a heat gun and skinny ...RealRider — 02:35 PM

[-]
Who's Online
There are currently 3415 online users. [Complete List]
» 2 Member(s) | 3413 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration